The restaurant issues Gift codes via 5FOOD app.
Upon taking order the waitstaff can recognize gift codes for the guests on the tablet/iPad/Phone by going to Order details and entering or scannig the gift codes.
Or when guest requests payment, waitstaff selects Send payment request and enters or scan the gift code here.
If guest requests to receive Check via 5Food app, waitstaff select Request check via 5Food. And then scan membership code and gift code here.
When Cashier checks out order, the bill will be applied this gift code.