Learning Objectives
- Define operations management, and discuss the role of the operations manager in a manufacturing company.
- Describe the decisions made in planning the production process in a manufacturing company.
Like PowerSki, every organization—whether it produces goods or provides services—sees Job 1 as furnishing customers with quality products. Thus, to compete with other organizations, a company must convert resources (materials, labor, money, information) into goods or services as efficiently as possible. The upper-level manager who directs this transformation process is called an operations manager. The job of operations management (OM)Management of the process that transforms resources into products., then, consists of all the activities involved in transforming a product idea into a finished product, as well as those involved in planning and controlling the systems that produce goods and services. In other words, operations managers manage the process that transforms inputs into outputs. Figure 11.1 “The Transformation Process” illustrates this traditional function of operations management.
In the rest of this chapter, we’ll discuss the major activities of operations managers. We’ll start by describing the role that operations managers play in the various processes designed to produce goods and offer services. Next, we’ll look at the production of goods in manufacturing firms; then, we’ll describe operations management activities in companies that provide services. We’ll wrap up the chapter by explaining the role of operations management in such processes as quality control and outsourcing.
Operations Management in Manufacturing
Like PowerSki, all manufacturers set out to perform the same basic function: to transform resources into finished goods. To perform this function in today’s business environment, manufacturers must continually strive to improve operational efficiency. They must fine-tune their production processes to focus on quality, to hold down the costs of materials and labor, and to eliminate all costs that add no value to the finished product. Making the decisions involved in the effort to attain these goals is the job of the operations manager. That person’s responsibilities can be grouped as follows:
- Production planning. During production planning, managers determine how goods will be produced, where production will take place, and how manufacturing facilities will be laid out.
- Production control. Once the production process is under way, managers must continually schedule and monitor the activities that make up that process. They must solicit and respond to feedback and make adjustments where needed. At this stage, they also oversee the purchasing of raw materials and the handling of inventories.
- Quality control. Finally, the operations manager is directly involved in efforts to ensure that goods are produced according to specifications and that quality standards are maintained.
Let’s take a closer look at each of these responsibilities.
Planning the Production Process
The decisions made in the planning stage have long-range implications and are crucial to a firm’s success. Before making decisions about the operations process, managers must consider the goals set by marketing managers. Does the company intend to be a low-cost producer and to compete on the basis of price? Or does it plan to focus on quality and go after the high end of the market? Perhaps it wants to build a reputation for reliability. What if it intends to offer a wide range of products? To make things even more complicated, all these decisions involve trade-offs. Upholding a reputation for reliability isn’t necessarily compatible with offering a wide range of products. Low cost doesn’t normally go hand in hand with high quality.
With these factors in mind, let’s look at the specific types of decisions that have to be made in the production planning process. We’ve divided these decisions into those dealing with production methods, site selection, facility layout, and components and materials management.
Production-Method Decisions
The first step in production planning is deciding which type of production process is best for making the goods that your company intends to manufacture. In reaching this decision, you should answer such questions as the following:
- How much input do I receive from a particular customer before producing my goods?
- Am I making a one-of-a-kind good based solely on customer specifications, or am I producing high-volume standardized goods to be sold later?
- Do I offer customers the option of “customizing” an otherwise standardized good to meet their specific needs?
One way to appreciate the nature of this decision is by comparing three basic types of processes or methods: make-to-order, mass production, and mass customization. The task of the operations manager is to work with other managers, particularly marketers, to select the process that best serves the needs of the company’s customers.
Make-to-Order
At one time, most consumer goods, such as furniture and clothing, were made by individuals practicing various crafts. By their very nature, products were customized to meet the needs of the buyers who ordered them. This process, which is called a make-to-order strategy, is still commonly used by such businesses as print or sign shops that produce low-volume, high-variety goods according to customer specifications.
Mass Production
By the early twentieth century, however, a new concept of producing goods had been introduced: mass production (or make-to-stock strategy) is the practice of producing high volumes of identical goods at a cost low enough to price them for large numbers of customers. Goods are made in anticipation of future demand (based on forecasts) and kept in inventory for later sale. This approach is particularly appropriate for standardized goods ranging from processed foods to electronic appliances.
Mass Customization
But there’s a disadvantage to mass production: customers, as one contemporary advertising slogan puts it, can’t “have it their way.” They have to accept standardized products as they come off assembly lines. Increasingly, however, customers are looking for products that are designed to accommodate individual tastes or needs but can still be bought at reasonable prices. To meet the demands of these consumers, many companies have turned to an approach called mass customization, which (as the term suggests) combines the advantages of customized products with those of mass production.
This approach requires that a company interact with the customer to find out exactly what the customer wants and then manufacture the good, using efficient production methods to hold down costs. One efficient method is to mass-produce a product up to a certain cut-off point and then to customize it to satisfy different customers.
The list of companies devoting at least a portion of their operations to mass customization is growing steadily. One of the best-known mass customizer is Nike, which has achieved success by allowing customers to configure their own athletic shoes, apparel, and equipment through Nike’s iD program. The Web has a lot to do with the growth of mass customization. Levi’s, for instance, lets a woman find a pair of perfect fitting jeans by going through an online fitting process that first identifies her “curve” type: slight (straight figure), demi (evenly proportioned), bold (curvy figure, which experiences waist gapping in the back), and supreme (curviest shape, which needs a higher rise in the back). Oakley offers customized sunglasses, goggles, watches, and backpacks, while Mars, Inc. can make M&M’s in any color the customer wants (say, school colors) as well as add text and pictures to the candy.See these websites for examples of customized products: Nike (http://nikeid.nike.com/nikeid/index.jsp), Levi (http://us.levi.com/shop/index.jsp?categoryId=4370093), Oakley (http://www.oakley.com/custom), and Mar’s M&M’s (http://www.mymms.com/utility.aspx?src=) (accessed November 2, 2011).
Naturally, mass customization doesn’t work for all types of goods. Most people don’t care about customized detergents or paper products (although a customized Kleenex tissue box with your picture on it and a statement that says, “go ahead…cry over me!” might come in handy after a relationship breakup with your significant other.Anita Windisman, “Personalized Packaging: Kleenex Offers Customizable Tissue Boxes,” One of a Kind Publishing, Inc., January 3, 2008, http://blogs.oneofakindpublishing.com/index.php?/archives/77-Personalized-Packaging-Kleenex-Offers Customizable-Tissue-Boxes.html (accessed November 1, 2011).) And while many of us like the idea of customized clothes, footwear, or sunglasses from Levi’s, Nike, or Oakley, we often aren’t willing to pay the higher prices they command.
Facilities Decisions
After selecting the best production process, operations managers must then decide where the goods will be manufactured, how large the manufacturing facilities will be, and how those facilities will be laid out.
Site Selection
In choosing a location, managers must consider several factors:
- To minimize shipping costs, both for raw materials coming into the plant and for finished goods going out, managers often want to locate plants close to suppliers, customers, or both.
- They generally want to locate in areas with ample numbers of skilled workers.
- They naturally prefer locations where they and their families will enjoy living.
- They want locations where costs for resources and other expenses—land, labor, construction, utilities, and taxes—are low.
- They look for locations with a favorable business climate—one in which, for example, local governments might offer financial incentives (such as tax breaks) to entice them to do business in their locales.
Managers rarely find locations that meet all these criteria. As a rule, they identify the most important criteria and aim at satisfying them. In deciding to locate in San Clemente, California, for instance, PowerSki was able to satisfy three important criteria: (1) proximity to the firm’s suppliers, (2) availability of skilled engineers and technicians, and (3) favorable living conditions. These factors were more important than operating in a low-cost region or getting financial incentives from local government. Because PowerSki distributes its products throughout the world, proximity to customers was also unimportant.
Capacity Planning
Now that you know where you’re going to locate, you have to decide on the quantity of products that you’ll produce. You begin by forecasting demand for your product. As we discussed in Chapter 10 “Product Design and Development”, forecasting isn’t easy. To estimate the number of units that you’re likely to sell over a given period, you have to understand the industry that you’re in and estimate your likely share of the market by reviewing industry data and conducting other forms of research.
Once you’ve forecasted the demand for your product, you can calculate the capacityMaximum number of products that a facility can produce over a given period under normal working conditions. requirements of your production facility—the maximum number of goods that it can produce over a given time under normal working conditions. In turn, having calculated your capacity requirements, you’re ready to determine how much investment in plant and equipment you’ll have to make, as well as the number of labor hours required for the plant to produce at capacity.
Like forecasting, capacity planning is difficult. Unfortunately, failing to balance capacity and projected demand can be seriously detrimental to your bottom line. If you set capacity too low (and so produce less than you should), you won’t be able to meet demand, and you’ll lose sales and customers. If you set capacity too high (and turn out more units than you should), you’ll waste resources and inflate operating costs.
Key Takeaways
- The job of operations management is to oversee the process of transforming resources into goods and services.
- The role of operations managers in the manufacturing sector includes production planning, production control, and quality control.
- During production planning, managers determine how goods will be produced (production process), where production will take place (site selection), and how manufacturing facilities will be laid out (layout planning).
- In selecting the appropriate production process, managers compare three basic methods: make-to-order strategy (goods are made to customer specifications), mass production or make-to-stock strategy (high volumes of goods are made and held in inventory for later sale), and mass customization (high volumes of customized goods are made).
- In choosing the site for a company’s manufacturing operations, managers look for locations that minimize shipping costs, have an ample supply of skilled workers, provide a favorable community for workers and their families, offer resources at low cost, and have a favorable business climate.
- Managers estimate the quantity of products to be produced by forecasting demand for their product and then calculating the capacity requirements of the production facility—the maximum number of goods that it can produce over a given period under normal working conditions.
Exercises
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(AACSB) Analysis
Two former surfers invented a material for surfboards that’s lighter and stronger than anything manufacturers now use. They have received funding to set up a production facility, and they want you to help them select a location. In addition to your recommendation, identify the factors that you considered in reaching your decision.
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(AACSB) Analysis
Compare and contrast three common types of production processes: make-to-order, make-to-stock, and mass customization. What are the advantages and disadvantages of each? Why are more companies devoting at least a portion of their operations to mass customization? Identify three goods that could probably be adapted to mass customization and three that probably couldn’t.
11.6 Operations Management for Service Providers
Learning Objectives
- List the characteristics that distinguish service operations from manufacturing operations.
- Describe the decisions made in planning the product delivery process in a service company.
- Identify the activities undertaken to manage operations in a service organization.
As the U.S. economy has changed from a goods producer to a service provider, the predominance of the manufacturing sector has declined substantially over the last sixty years. Today, only about 9 percent of U.S. workers are employed in manufacturing, in contrast to 30 percent in 1950.“Avoiding an American ‘Lost Decade,’” The Global Language Monitor, November 3, 2010, http://www.languagemonitor.com/tag/percentage-of-the-non-farm-payroll-in-manufacturing/ (accessed November 2, 2011); William Strauss, “Is U.S. Manufacturing Disappearing?,” Federal Reserve Bank of Chicago, August 19, 2010, http://midwest.chicagofedblogs.org/archives/2010/08/bill_strauss_mf.html#footnote2 (accessed November 2, 2011). Most of us now hold jobs in the service sector, which accounts for 77 percent of U.S. gross domestic product.“International Monetary Fund, World Economic Outlook Database, April 2011: Nominal GDP List of Countries. Data For The Year 2010,” International Monetary Fund, http://www.imf.org/external/pubs/ft/weo/2011/01/weodata/index.aspx (accessed November 2, 2011); Wikipedia, s.v. “List of Countries by GDP Sector Composition,” http://en.wikipedia.org/wiki/List_of_countries_by_GDP_sector_composition (accessed November 2, 2011). Wal-Mart is now America’s largest employer, followed by IBM, United Parcel Service (UPS), McDonald’s, and Target. Not until we drop down to the seventh-largest employer—Hewlett Packard—do we find a company with even a manufacturing component.“America’s Ten Largest Employers,” 24/7 Wall Street, April 10, 2011, http://247wallst.com/2011/04/24/americas-ten-largest-employers/#ixzz1ayiE71Sr (accessed November 2, 2011).
Though the primary function of both manufacturers and service providers is to satisfy customer needs, there are several important differences between the two types of operations. Let’s focus on three of them:
- Intangibility. Manufacturers produce tangible products—things that can be touched or handled, such as automobiles and appliances. Service companies provide intangible products, such as banking, entertainment, or education.
- Customization. Manufactured goods are generally standardized; one twelve-ounce bottle of Pepsi is the same as any other twelve-ounce bottle of Pepsi. Services, by contrast, are often customized to satisfy the specific needs of a customer. When you go to the barber or the hairdresser, you ask for a haircut that looks good on you because of the shape of your face and the texture of your hair. When you go to the dentist, you ask him or her to fill or pull the tooth that’s bothering you.
- Customer contact. You could spend your entire working life assembling cars in Detroit and never meet a customer who bought a car that you helped to make. But if you were a waitress, you’d interact with customers every day. In fact, their satisfaction with your product would be determined in part by the service that you provided. Unlike manufactured goods, many services are bought and consumed at the same time.
Not surprisingly, operational efficiency is just as important in service industries as it is in manufacturing. To get a better idea of the role of operations management in the service sector, we’ll look closely at Burger King (BK), home of the Whopper, and the world’s second-largest restaurant chain.“Press Room,” Burger King, http://www.bk.com/en/us/company-info/press/index.html (accessed November 2, 2011). BK has grown substantially since selling the first Whopper (for $0.37) almost half a century ago. The instant success of the fire-grilled burger encouraged the Miami founders of the company to expand by selling franchises. Today, there are 12,200 BK company- and independently-owned franchised restaurants in seventy-three countries (seven thousand of which are in the United States), and they employ almost forty thousand people.SEC, 10K SEC Filings, Burger King Corporation, August 2010, http://services.corporate-ir.net/SEC.Enhanced/SecCapsule.aspx?c=87140&fid=7105569 (accessed November 3, 2011). More than eleven million customers visit BK each day.“Press Room,” Burger King, http://www.bk.com/en/us/company-info/press/index.html (accessed November 2, 2011).
Operations Planning
When starting or expanding operations, businesses in the service sector must make a number of decisions quite similar to those made by manufacturers:
- What services (and perhaps what goods) should they offer?
- How will they provide these services?
- Where will they locate their business, and what will their facilities look like?
- How will they forecast demand for their services?
Let’s see how service firms like BK answer questions such as these.Information on Burger King was obtained from an interview with David Sell, former vice president of Central, Eastern, and Northern Europe divisions and president of Burger King France and Germany.
Operations Processes
Service organizations succeed by providing services that satisfy customers’ needs. Companies that provide transportation, such as airlines, have to get customers to their destinations as quickly and safely as possible. Companies that deliver packages, such as FedEx, must pick up, sort, and deliver packages in a timely manner. Colleges must provide quality educations. Companies that provide both services and goods, such as Domino’s Pizza, have a dual challenge: they must produce a quality good and deliver it satisfactorily.
Service providers that produce goods can, like manufacturers, adopt either a make-to-order or a make-to-stock approach to manufacturing them. BK, which encourages patrons to customize burgers and other menu items, uses a make-to-order approach. BK can customize products because it builds sandwiches one at a time rather than batch-process them. Meat patties, for example, go from the grill to a steamer for holding until an order comes in. Then the patty is pulled from the steamer and requested condiments are added. Finally, the completed sandwich chutes to a counter worker, who gives it to the customer. In contrast, many of BK’s competitors, including McDonald’s, rely on a make-to-stock approach in which a number of sandwiches are made at the same time with the same condiments. If a customer wants, say, a hamburger without onions, he or she has to wait for a new batch of patties to be grilled. The procedure could take up to five minutes, whereas BK can process a special order in thirty seconds.
Like manufacturers, service providers must continuously look for ways to improve operational efficiency. Throughout its sixty-year history, BK has introduced a number of innovations that have helped make the company (as well as the fast-food industry itself) more efficient. BK, for example, was the first to offer drive-through service (which now accounts for 70 percent of its salesBob Krummert, “Burger King: Headed For A Fast-Casual Flameout?,” Restaurant Hospitality,
http://restaurant-hospitality.com/news/burger-king-headed-flameout-1019/ (accessed November 3, 2011).
).
It was also a BK vice president, David Sell, who came up with the idea of moving the drink station from behind the counter so that customers could take over the time-consuming task of filling cups with ice and beverages. BK was able to cut back one employee per day at every one of its more than eleven thousand restaurants. Material costs also went down because customers usually fill cups with more ice, which is cheaper than a beverage. Moreover, there were savings on supply costs because most customers don’t bother with lids, and many don’t use straws. On top of everything else, most customers liked the system (for one thing, it allowed them to customize their own drinks by mixing beverages), and as a result, customer satisfaction went up, as well. Overall, the new process was a major success and quickly became the industry standard.
Facilities
When starting or expanding a service business, owners and managers must invest a lot of time in selecting a location, determining its size and layout, and forecasting demand. A poor location or a badly designed facility can cost customers, and inaccurate estimates of demand for products can result in poor service, excessive costs, or both.
Site Selection
People in the real estate industry often say that the three most important factors to consider when you’re buying a home are location, location, location. The same principle applies when you’re trying to locate a service business. To be successful in a service industry, you need to be accessible to your customers. Some service businesses, such as cable-TV providers, package-delivery services, and e-retailers, go to their customers. Many others, however—hotels, restaurants, stores, hospitals, and airports—have to attract customers to their facilities. These businesses must locate where there’s a high volume of available customers. Let’s see how BK decides where to place a restaurant.
“Through the light and to the right.” This is a favorite catchphrase among BK planners who are looking for a promising spot for a new restaurant (at least in the United States). In picking a location, BK planners perform a detailed analysis of demographics and traffic patterns, yet the most important factor is usually traffic count—the number of cars or people that pass by a specific location in the course of a day. In the United States, where we travel almost everywhere by car, BK looks for busy intersections, interstate interchanges with easy off and on ramps, or such “primary destinations” as shopping malls, tourist attractions, downtown business areas, or movie theaters. In Europe, where public transportation is much more common, planners focus on subway, train, bus, and trolley stops.
Once planners find a site with an acceptable traffic count, they apply other criteria. It must, for example, be easy for vehicles to enter and exit the site, which must also provide enough parking to handle projected dine-in business. Local zoning must permit standard signage, especially along interstate highways. Finally, expected business must be high enough to justify the cost of the land and building.
Size and Layout
Because manufacturers do business out of plants rarely visited by customers, they base the size and layout of their facilities solely on production needs. In the service sector, however, most businesses must design their facilities with the customer in mind: they must accommodate the needs of their customers while keeping costs as low as possible. Performing this twofold task isn’t easy. Let’s see how BK has met the challenge.
For its first three decades, almost all BK restaurants were pretty much the same. They all sat on one acre of land (located “through the light and to the right”), had about four thousand square feet of space, and held seating for seventy customers. All kitchens were roughly the same size. As long as land was cheap and sites were readily available, this system worked well enough. By the early 1990s, however, most of the prime sites had been taken, if not by BK itself, then by one of its fast-food competitors or other businesses needing a choice spot, including gas stations and convenience stores. With everyone bidding on the same sites, the cost of a prime acre of land had increased from $100,000 to over $1 million in a few short years.
To continue growing, BK needed to change the way it found and developed its locations. Planners decided that they had to find ways to reduce the size of a typical BK restaurant. For one thing, they could reduce the number of seats, because the business at a typical outlet had shifted over time from 90 percent inside dining and 10 percent drive-through to a 50-50 split. BK customers tended to be in a hurry, and more customers preferred the convenience of drive-through “dining.”
David Sell (the same executive who had recommended letting customers fill their own drink cups) proposed to save space by wrapping Whoppers in paper instead of serving them in the cardboard boxes that took up too much space in the back room of every restaurant. So BK switched to a single paper wrapper with the label “Whopper” on one side and “Cheese Whopper” on the other. To show which product was inside, employees just folded the wrapper in the right direction. Ultimately, BK replaced pallets piled high with boxes with a few boxes full of wrappers.
Ideas like these helped BK trim the size of a restaurant from four thousand square feet to as little as one thousand. In turn, smaller facilities enabled the company to enter markets that were once cost prohibitive. Now BK could locate profitably in airports, food courts, strip malls, center-city areas, and even schools. The company even designed 10-foot-by-10-foot kiosks that could be transported to special events, stadiums, and concerts.
Capacity Planning
Estimating capacity needs for a service business isn’t the same thing as estimating those of a manufacturer. A manufacturer can predict overall demand, produce the product, store it in inventory, and ship it to a customer when it’s ordered. Service providers, however, can’t store their products for later use: hairdressers can’t “inventory” haircuts, hospitals can’t “inventory” operations, and amusement parks can’t “inventory” roller-coaster rides. Service firms have to build sufficient capacity to satisfy customers’ needs on an “as-demanded” basis. Like manufacturers, service providers must consider many variables when estimating demand and capacity:
- How many customers will I have?
- When will they want my services (which days of the week, which times of the day)?
- How long will it take to serve each customer?
- How will external factors, such as weather or holidays, affect the demand for my services?
Forecasting demand is easier for companies like BK, which has a long history of planning facilities, than for brand-new service businesses. BK can predict sales for a new restaurant by combining its knowledge of customer-service patterns at existing restaurants with information collected about each new location, including the number of cars or people passing the proposed site and the effect of nearby competition.
Managing Operations
Overseeing a service organization puts special demands on managers, especially those running firms, such as hotels, retail stores, and restaurants, that have a high degree of contact with customers. Service firms provide customers with personal attention and must satisfy their needs in a timely manner. This task is complicated by the fact that demand can vary greatly over the course of any given day. Managers, therefore, must pay particular attention to employee work schedules and (in some cases) inventory management. Let’s see how BK deals with these problems.
Scheduling
In manufacturing, managers focus on scheduling the activities needed to transform raw materials into finished goods. In service organizations, they focus on scheduling workers so that they’re available to handle fluctuating customer demand. Each week, therefore, every BK store manager schedules employees to cover not only the peak periods of breakfast, lunch, and dinner, but also the slower periods in between. If he or she staffs too many people, labor cost per sales dollar will be too high. If there aren’t enough employees, customers have to wait in lines. Some get discouraged, and even leave, and many may never come back.
Scheduling is made easier by information provided by a point-of-sale device built into every BK cash register. The register keeps track of every sandwich, beverage, and side order sold by the hour, every hour of the day, every day of the week. Thus, to determine how many people will be needed for next Thursday’s lunch hour, the manager reviews last Thursday’s data, using sales revenue and a specific BK formula to determine the appropriate staffing level. Each manager can adjust this forecast to account for other factors, such as current marketing promotions or a local sporting event that will increase customer traffic.
Inventory Control
Businesses that provide both goods and services, such as retail stores and auto-repair shops, have the same inventory-control problems as manufacturers: keeping levels too high costs money, while running out of inventory costs sales. Technology, such as the point-of-sale registers used at BK, makes the job easier. BK’s system tracks everything sold during a given time and lets each store manager know how much of everything should be kept in inventory. It also makes it possible to count the number of burgers and buns, bags and racks of fries, and boxes of beverage mixes at the beginning or end of each shift. Because there are fixed numbers of supplies—say, beef patties or bags of fries—in each box, employees simply count boxes and multiply. In just a few minutes, the manager knows whether the inventory is correct (and should be able to see if any theft has occurred on the shift).
Key Takeaways
- Though the primary function of both manufacturers and service providers is to satisfy customer needs, there are several important differences between the two types of operations.
- While manufacturers produce tangible, generally standardized products, service firms provide intangible products that are often customized to satisfy specific needs. Unlike manufactured goods, many services are bought and consumed at the same time.
- Operational efficiency is just as important in service industries as it is in manufacturing.
- Operations managers in the service sector make many decisions that are similar to those made by manufacturers: they decide which services to offer, how to provide these services, where to locate their businesses, what their facilities will look like, and what the demand will be for their services.
- Service providers that produce goods can, like manufacturers, adopt either a make-to-order approach (in which products are made to customer satisfaction) or make-to-stock approach (in which products are made for inventory) to manufacturing them.
- Estimating capacity needs for a service business is more difficult than for a manufacturer. Service providers can’t store their services for later use: services must be delivered on an as-needed basis.
- Overseeing a service organization puts special demands on managers, especially services requiring a high degree of contact with customers.
- Given the importance of personalized service, scheduling workers is more complex in the service industry than in manufacturing. In manufacturing, operations managers focus on scheduling the activities needed to produce goods; in service organizations, they focus on scheduling workers to ensure that enough people are available to handle fluctuating customer demand.
Exercise
(AACSB) Analysis
Starting a new business can be an exciting adventure. Here’s your chance to start a “pretend” business. Select a service business that you’d like to open, and answer these questions. Provide an explanation for each answer:
- What services (and perhaps goods) will I provide?
- How will I provide these services?
- Where will I locate my business?
- What will the facilities look like (how large will the facilities be and what will the layout look like)?
- How many customers will I serve each day?
- When will my customers want my services (which days of the week, which times of the day)?
- How long will it take to serve each customer?
- Why will my business succeed? Why will my customers return?