How to indicate that a class meeting in a complex lesson is in co-teaching

If the co-teachers have already been placed in the lesson, go to the display Timetable > Lesson > List, then double-click on the complex lesson: the window Specify the complex lessons appears. Select the co-teachers Ctrl + click, right-click and click on Place in co-teaching.

If a single teacher has been placed in the lesson, add the co-teacher directly from the lesson form of the teacher's already filled in timetable, in the display Timetable > Teachers > Timetable.