Here is my situation:
We have 2 meeting rooms having their own calendar (resource mailbox).
Reply to meeting request for these rooms is set to automatic.
1 staff is the delegate for the boss' calendar (full permissions).
Same staff has the meeting room calendars in its outlook with reviewer permission.
Boss creates a meeting request from his ipad and adds the meeting room as an attendee (no room booking option in the ipad's calendar)
Delegate updates the newly created meeting, changes time for example, nothing else, and the result of this is the creation of an additional meeting in the meeting room calendar.
Any idea how to prevent that ?