Click on 'Activities' in the menu bar. Then click on 'More' in the top right corner and start the export (see screenshot).
Step 1: Use the date filter to select the time frame you want to create the overview for. Then decide whether the overview should contain only class appointments or all activities offered by you (e.g. also workshops). To create the export click on 'Export'. Now a CSV file will be downloaded. This does not open automatically, but must be opened manually by you. Find out what you need to consider for that.
Step 2: Now you can edit the overview in the program you are using, e.g. Excel. This is particularly interesting for the teacher payroll, since the overview also includes the number of participants and trainer names.