In most cases, substitutions are edited in the substitution window (=substitution view). Every change of the daily up-dated timetable, may it be by entering an absence, an event or by working on the scheduling dialogue generates a substitution line in the substitution window which can be edited An open substitution can be set to "Cancellation", a substitution or supervision teacher can be assigned, or the room can be changed. In the following, the different possibilities are described in more detail.