KHQR display: To receive payments from all banks.
Sale menu: To set payment amount via KHQR and card.
Void menu: To cancel card transaction that has not been settled during the day.
Refund menu: For card transactions that have already been settled.
Pre-Auth menu: To block/freeze the amount on card transaction.
Pre-Auth Completion menu: To approve transaction that has blocked/frozen amount on card (all or part).
Tip Adjustment menu: To give tips for card payment that has not yet been settled.
Settlement menu: To close batch operation (one shift or daily) and send data to core bank system. It must be done at least once a day.