Who is the organizer of a meeting and why does it matter?

The organizer of a meeting in Exchange is the owner of the mailbox in which the original meeting item is created, typically using Outlook.

Because of this, meetings should not be created directly in resource calendars, but in the calendar of the person responsible for the meeting. The resource should then be invited to the meeting, which happens automatically if a room calendar is chosen as the location for the meeting.

It is still possible to book meetings on behalf of other users by using delegated access.