Guest bonuses (cashback)

Settings → "Loyalty":

• "Bonus cashback, % of bill": how many bonuses a guest gets from a payment;
• "Bonuses can pay up to, % of bill": what share of the bill can be paid with bonuses (50% by default).

0% turns the program off, and the till won't show the guest button. How to work with guests on the till: Guests and bonuses.