You have entered classes in the Calendar, which, however, do you want to delete? You can remove them very easily.
How to do it?
Select the class you want to delete from Calendar and click Group Details.
Then Edit Classes, and when the Edit page opens, select the Delete Class button.
What should you pay attention to before removing classes from Calendar?
Before you delete the classes, check if your clients have not paid for these classes – their removal may result in overpayments or underpayments in their settlements.