What has to exist before your assistant can book anybody in.
Four things have to be in place, and a booking calendar with any one of them missing shows no available times at all, with nothing on screen saying why. In order: booking switched on, a location, your services, and at least one person who does the work with hours set.
If you answered "take bookings and give quotes" during signup, all four were set up for you and you are editing rather than creating.
Connect it under Integrations and your assistant books into Square instead. Your services and staff stay managed in Square.
Yes. A service can be quote-only — it appears in prices and answers but cannot be booked online.