For body-therapy / Reiki / 1-on-1 sessions: pull one session from the client's active pass automatically.
Rooms → + Add booking. Search the member in the Client (optional) field.
If they have an active pass, the checkbox appears. Hit Create — one session is automatically pulled from their active pass. The booking detail page shows who the client is and that a session was used.
When linked, the client gets a push notification ~1 hour before the appointment, the same way class reminders work.