Calendar object resources on which the server performs scheduling operations are referred to as scheduling object resources. There are two types of scheduling object resources: organizer scheduling object resources, and attendee scheduling object resources.
A calendar object resource is considered to be a valid organizer scheduling object resource if the "ORGANIZER" iCalendar property is present and set in all the calendar components to a value that matches one of the calendar user addresses of the owner of the calendar collection.
A calendar object resource is considered to be a valid attendee scheduling object resource if the "ORGANIZER" iCalendar property is present and set in all the calendar components to the same value and doesn't match one of the calendar user addresses of the owner of the calendar collection, and if at least one of the "ATTENDEE" iCalendar property values matches one of the calendar user addresses of the owner of the calendar collection.
The creation of attendee scheduling object resources is typically done by the server, with the resource being created in an appropriate calendar collection (see Section 4.3).