To cancel an existing meeting, open the meeting details by double clicking the meeting in the Outlook calendar. In the top left corner, click "Cancel Meeting". This will send an email to all of those attending saying that the meeting has been cancelled, and any reservations you had on the room will be removed.





If you need to change the time or location of a meeting instead, instructions can be found here: http://helpdesk.continentaloffice.com/support/solutions/articles/1000144398-how-do-i-change-the-time-or-location-of-a-meeting-