The idea is to make it possible to activate/deactivate an element for the same time span every day (or week) during several days (or weeks, or months).

For example: I want an element to be active during 2 weeks and only during my lessons on Tuesdays from 9:00 to 10:00 and on Fridays from 12:00 to 13:00. Right now, I have to activate/deactivate the element every single lesson again. It would be perfect if I could set a time span, and that automatically the element is activated during my lessons.