EZS is a small fast food outlet located in midtown Parit Buntaq and serving mainly the government servants.EZS' main fare is a freshly prepared, customizable line of sandwiches.It is supplemented with an assortment of drinks, light salads, seasonal fruit and snacks.The restaurant is open 10:00AM to 10:00PM, but the peak demand is during lunch hours, 11:30AM to 2:00PM. A customer joining the line makes a sandwich selection by consulting the billboard, marks her selection on a customized form, and hands the form to one of several assemblers who produce the sandwich.The customer does not wait for the sandwich to be assembled, but proceeds directly down the line to select additional items onto her tray.Next, the customer proceeds to pay at the cash register.Finally, (after the payment is completed) she collects her prepared sandwich at a designated location. Selecting the sandwich and marking the form takes 45 seconds.Assembling the sandwich requires 90 seconds.Selecting additional items takes 60 seconds.Paying at the cash register requires 40 seconds.Collecting the prepared sandwich requires 20 seconds.The restaurant employs two cash registers and six sandwich assemblers, and one person to disburse the prepared sandwiches.

Develop a process map for sandwich making process.

Determine the capacity of cashier, assembler and the person disbursing sandwiches.

During rush hour, demand exceeds capacity and long lines form.Determine whether it makes sense to add a sandwich assembler.

Justify your answer.

Assuming that the selection of additional items on the menu is reduced from 60 seconds to 40 seconds. Do we need an additional sandwich assembler?

Justify your answer.