Retrieve a single BusinessTimeSlot record by its Id.
FromTime and ToTime are always 1976-01-01 — only the time-of-day portion is meaningful.
When no time slots are defined for a location, the location is considered open at all times. Adding time slots restricts opening hours to the specified windows only.
Authorization header.
The authenticated user must be a full unrestricted administrator or have the BusinessTimeSlot-Read role.