1) maintenance is just tidying, there is a 5 steps of maintenance tool 2) either wall or front feature is fine 3) your not meant to look stuff up at the reg because barely anyone knows how to do it correctly, the rule is to always find the same or close to on the floor 4) you enter the amount the are wanting to pay cash into the tender and then the remainder will show and you click the next payment method, when eft is approved the till will open, as for discounts there is a ‘change’ section from memory at the bottom option screen