Hi,
Based on my research, this is an Exchange issue, not Outlook. It needs to be changed on the Exchange server using the set-mailboxcalendarsettings cmdlet to change the DeleteSubject and AddOrganizertoSubject settings for the resource room. See:
http://www.slipstick.com/exchange/cmdlets/meeting-organizers-name-appears-in-subject-line/
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Regards,
Steve Fan
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.
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