Some courses do not appear in my timetable, why?
If some of the courses have already been enrolled, only these are displayed. If you want to view the timetable including courses that you have only registered, use the option "including the courses the student(s) has (have) only registered for". Registered courses will be highlighted in a different colour in the timetable.

1 Selecting the type of timetable. Marking this option will also list only registered courses in the timetable.