Sdui automatically creates appropriate groups for your classes and courses. So you don't have to create any groups for your class or your courses manually. The groups created by Sdui are dynamic, this means that new members of the class are automatically added to the group. 

You can recognise the groups created by Sdui in your group overview by the small tick on the group symbol. 

Furthermore, the groups created by Sdui are marked in color. Student groups are marked in green, teacher groups in blue and parent groups in orange.

You can obtain your class group by registering as a (co-) class teacher for your class via your profile.

You will receive your course groups via the timetable.