Location has been moved into the Participants, and some usage notes added. A Search parameter specializing to this property has also been included. Remove the Location from the Appointment Resource and instead utilize the actor property on the participants sub component. This property is already searchable, so meets the need of the issue. Further usage guidance on this will be included. This also removes the special cases required for the location, and can be considered for scheduling/availability checking the same as all other participants in the appointment.