If you want to assign an additional lesson in a particular period to a certain class or a certain teacher, right-click in the respective period of the class or teacher timetable concerned, and select "Special duty / Change period".
In the dialogue window below, the class has already been pre-selected. All other elements, such as teacher, subject and room can be defined via the selection fields. The following options help you to make a selection:
Only available teachers
If there is a check in the box of this option, only those teachers are shown who do not teach in the selected period.
Only subjects of the teacher
Restricts the selection to those subjects taught by the selected teacher.
Only available rooms
Only shows the rooms which are available in this period.
If the additional lesson is not to be created for the entire class, you can either enter or select a student group..
Additionally, you can enter a text for this additional lesson which will then be displayed in the substitition text.
Finally, you only need to confirm with < OK><OK>.
The newly created special duty is now shown both in the timetables and in the substitition list as special duty.
If you assign a teacher who teaches in this period, instead of an available teacher, according to your substitution grid, an uncovered substitution or cancellation is triggered for the original lesson of the teacher in addition to the special duty.
If you want to change certain elements of the special duty after you have created it, go to the the substitution list and change them of the respective row of the special duty.