The uncancellable period is the amount of notice a client needs to give in order to cancel a booking. This is used to prevent clients from making last minute online cancellations themselves. You choose the number of hours you require for advance notification of a cancellation; or leave the field on the default 0 hours if you don’t wish to include a notification period.
The uncancellable period can range from 0 hours (off) up to your choice. This restriction only applies to clients cancelling their own bookings from their own dashboard.