Hello mattycl

Thank you for your purchase.

I am sorry to disappoint you, but unfortunately something like this is not possible with the plugin's built-in features.

You can only define the duration of the service, and that determines how long the employees assigned to this service will work on the service.

Hello mattycl

Sure, when you open a service, just disable "Show service on site" slider:

When you enable this, the customers won't see it, but your staff would be able to create appointments in back-end.