Make sure your event is not conflicting with another event:
  1. Select the Events Tab > Program Search > Find your program and double click it's name
  2. Select the Conflicts tab
  3. Find the event in question
    1. If the event is okay to conflict with the event it is conflicting with, choose schedule
    2. If the event does not need to conflict with the other event, choose resolve and change the location, date or start time accordingly.