One way, and never the other
Appointments go out to the practitioner's calendar. Nothing comes back in. An event they create in their own calendar does not block clinic time, does not appear in online booking, and cannot move a patient's appointment.
That limit is the design, not a shortcut. The clinic calendar has one author: your team, working in the admin panel. The moment a personal calendar can write into it, a dentist appointment on somebody's phone can silently remove a patient's slot, and nobody can say afterward what happened. Blocking clinic time is done in Team, under time off, which is visible to everyone who needs to see it.