You create lesson groups under “Lessons | Lesson Groups”
Lesson groups are created just like master data elements with name and full name. In the example two lesson groups, “wA” and “wB”, have been created.
In the case of lesson group wA the “Week A” box has been checked while the “Week B” box has been checked for wB.

Clicking on the <Calendar> toolbar icon
shows you when lessons with this lesson group will be held. In the example of lesson group “wA - week A” lessons take place every fortnight beginning with the first week of school. School holidays are displayed in orange while public holidays are displayed in red.

By clicking on the <Lesson Group Calendar> toolbar icon
once you can switch to the weekly display and see when week A and week B are activated over the whole school year.

In the example week A is coloured yellow and week B is coloured green. The colours can be changed by clicking on the button <Colours>.
This lesson group can now be assigned to the lessons in question (see chapter “Assigning Lesson Groups to Lessons” ).