If you offer services that require explanation or are complex, and customers are only allowed to book them after telephone consultation, you can set this up. Customers will see this service in the online booking and learn that you offer it. However, the service can only be booked by telephone.
Make service bookable by telephone
In the desired service, you can activate the appropriate option under "Online Booking":

Service bookable by telephone in the booking interface
This service continues to be displayed in the online booking, but it is not bookable online and is displayed with a note that you must call to book this service:
