I am working in SharePoint 2013 and seeking a way to add a calendar conflict check therefore end-users can not enter events into the calendar that will overlap with another event.
For instance, if there's a 3 meeting rooms. Person A adds an entry for Room #1 at 8AM-12PM on 6/5/2014. If Person B adds an entry for Room#1 for 11AM-1PM the conflict checker should not allow for this entry to be entered. I know in SharePoint 2013 when you create a calendar "Check Double Booking" appears as a column type. However, I am not sure if this is the same.
Do you know how I would go about adding a conflict checker to a calendar? Thank you for your help!