Outlook COMAddIn help-Need to get the appointments created for the whole organisation in Exchange

I have a Outlook COMAddIn which is working as expected. I need to add few additional features. [login to view URL] to retrieve the RoomLists ,so that I can create a report of all the appointments which has resources/rooms associated with it. [login to view URL] to fetch CustomAttribute for a Logged In User in Outlook from Exchange. Exchange details Will be provided to the selected Freelancer. I need it as quickly.