WebUntis' substitution planning provides you with several solutions for open substitutions:
The newly selected teacher is entered into the timetable. As soon as the substitution is published, the teacher receives a push message.
For each teacher, you see the criteria, if and why a teacher is suitable for this period.
See: Criteria for substitution suggestions
The period is shown as "cancelled" in the timetable. Students, therefore, know that they do not have a lesson in this period.
You can choose this solution to show that no substitution is necessary for the absent teacher.
If there are additional teachers in the lesson (team teaching), then they will be shown.
If there are no additional teachers in the lesson, this means for the students that they can do their "personal studies".
This solution provides the teachers with the possibility to decide themselves, if they can take over the respective substitution. See: Ask teachers
In the following months, we are going to add several other solutions to this list which you already know from working with Untis.