By default, customers can book any available timeslot at least 5 minutes in the future. You are able to configure this feature so that only bookings further in the future are available to be booked.
For example, you may require that bookings are made at least 24 hours in advance.
			
 
							 
							 
							 
							Your customers will now be able to see only available appointments at least the amount of time specified in the future.