What this setting controls
Lock unpaid pass prevents customers from using a pass before payment has been verified. The pass appears in the customer's account but is greyed out and cannot be selected when booking. Useful when payment confirmation lags (manual bank transfer, cheque) and you do not want customers consuming visits before the money lands.
How to enable
Go to Admin → Settings → Pass → Lock unpaid passes. Turn on and save. Admins can still book with unpaid passes on behalf of customers — the lock only applies to customer self-booking.
