How to delete class

In the main menu click on Classes. In dialog you can select one or more classes from the list with using "Shift" or "Ctrl" keys. Then click on "Remove" button and confirm with "Yes".

Note:
- this operation will remove all lessons from these classes also.

If following message appears,

then it means, that one of marked classes are active. In the "Whole" view simply select another class (just click in any other row ). Then remove the classes again.