At our organization we use a series of shared Outlook calendars to schedule out our conference rooms. All domain users are setup as authors of these calenders. We are now running into a problem where the end user is either not checking/caring if a room already has an appointment assigned to the room for the period of time that they want to use it. So my question is this: Is there any way to prevent a user from scheduling an appointment or meeting on one of these calendars when there is already a preexisting one on it?
We've already tried going into Options -> Resource Scheduling and checking "Automatically decline conflicting meeting requests," but this did not resolve the issue.