Set minimum notice periods for bookings & cancellations
You can set a minimum notice period (eg. 24, 48 hours) for bookings and cancellations. For example, require customers to book or cancel at least one hour before appointment time. This way, the booking on your website won’t be available if there is only that much time left until the appointment. Should the client cancel in time, this will not affect them. But it will prevent them cancelling on short notice.