When customers come to purchase items from the store The Department serves customers worldwide When a customer chooses to purchase an item and then make payment cashier, but if there are no items in this shop, you will query the warehouse that contains items that customers want? If you have a query that will lead to customer? If you don't wait, end task, but if you wait, it will let customers pay and collect customer information, customer, and then wait for your pakap slip for a period of 24 hours or 1 day shop, they will return to the warehouse that the items. Warehouse receipt, send the item to the store's restaurant.