Assume that the processes to order, prepare, and deliver the hot beverage are similar to those in any large coffee chain. The processes include:

$$ Orders and cash are taken by the Serving Attendant $/$ Cashier from the customer;

$$ Orders taken by the Serving Attendant $/$ Cashier are passed to a Barista automatically and shown on a screen for fulfillment by a Barista;

$$ There are separate processes for preparing tea and coffee;

$$ Completed orders are provided to the customer by the Barista;

$$ The Barista can also request additional milk and coffee beans to be obtained from the storeroom by the kitchen hands or other stock to be ordered by the Caf$$ Manager;

$$ The customer can select the sugar or sweetener of their choice from a serving bar located at the point where They receive their beverage.