Note: Before proceeding be sure to save a snapshot of your existing schedule so that you can revert to it if needed.
1. In OnRecord > Procedures > Schedule Maker
2. Select Generate Master Schedule
3. Under information to Schedule uncheck Schedule next to Teachers, Blocks and Rooms
4. Check the box next to Clear Out Existing Teachers, Blocks and Rooms.
5. Filter on any departments that you would like to include if updating schedules for specific courses.