Clusters: add scheduling requirements

In the course cluster matrix you will see a context menu by a right-click on the grid where you can choose 'Split cluster / scheduling requirements'. In the dialogue popping up you see all the functionalities you are already used to work with. However, you now also have the possibility to assign double periods, block requirements or lesson groups to all lessons.

The result of this function is now displayed in the lesson window, the entries are shown in the respective fields.