Frontend log-in possibility to make changes to the table

Is it possible (otherwise it would be a feature request) to change the table in frontend by logged-in-teachers (for example to add an new test in "Schulaufgabenplaner" which should show test events for pupils according to their class "5a", "5b" etc.)? Look at (at the bottom):
https://www.bodensee-gymnasium.de/WP/fuer-schueler-eltern/online-kalender