Running Outlook 2010, Exchange 2010, and Windows 7 (mostly).

I have set up a Room Mailbox, and people are able to make reservations there - working as expected. The problem is this: there are some assistants who book the room for meetings, but are not actually part of the meetings themselves. These meetings are now showing up on their own personal calendars, where they don't want them.

Is there a way to set up a room reservation without having that meeting appear on your own personal calendar?