Can you use Gantt Charts

Food Ordering Process

Customers should be authenticated for ordering, eating and paying for food. This could be done through user login page or single sign on$.$ Authentication service is used in all these use cases as an external actor.

Waiters serve food to clients; also they may serve wine.$($waiters can finalize the activities without authentication$)$

Customers ordering food and they may also order wine.

Customers eat food and may also drink wine.

Customers pay for food

Cashier accepts payment after the payment process is finalized by Clients.$($Cashier should be authenticated $)$

For Cashiers to logout from the system, they should finalize the accept payment process