Can reception add credit for a guest?

Yes, the reception can add credit to a property via the manager overview, just as the guest can do themselves via the QR code. The guest sees this immediately reflected in their own overview, without a separate receipt or login, and can still leave any remaining balance or request a refund later. This is intended as an extra option for exceptions, not as a replacement: most guests prefer to arrange their credit themselves. If there is structurally high consumption or a lot of time wasted at the desk, it is better to look at the cause than to keep topping up.