You'd need a delegate or autoaccept script. See http://www.slipstick.com/calendar/skedresource.htm

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Sue Mosher, Outlook MVP
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>I have about 14 meeting rooms that I just setup and all is working fine other
> than the way users are scheduling the meetings. They are right clicking on
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> I'll also want to keep a group of admins as owner of the rooms which is a
> seperate set of permissions already.