Date window

Date window: a reusable inclusion or exclusion period, applied as an overlay on the time constraints of several entities (classes, groups, subjects, classrooms) to control when their lessons can be scheduled in calendar mode.

A date window is a reusable date inclusion or exclusion period that restricts when certain lessons can be scheduled. Defined once on the edit screen of a calendar timetable, it then applies as an overlay on the time constraints of several entities — classes, groups, subjects or classrooms.