Background... My daughter's faculty uses Sceduly to enable students to show when and where their classes, laboratories, etc... are.

Students are divided into groups. However, each student, within the same year, sees all the classes and laboratories of all the groups in Sceduly which makes it unreadable and unusable.

This Tampermonkey user script enables selective hiding and displaying, filtering, of schedule items in Sceduly based on lecture title and group.

Disclaimer: use at your own risk and double check your schedule, author is in no way responsible for missed classes :)!!!