To remove mass amounts of classes at once:
Step 1 - Click Schedule
Step 2 - Click Schedule Classes
Step 3 - Click Quick Delete in the top right
Step 4 - Select all the events you would like to delete (You can view by month by clicking month in the top right)
Step 5 - Click Delete Events
Step 6 - Confirm by clicking Yes, Delete
Category > Section:Business Management >Schedule