For the modules from other departments that are suggested for the elective part please see this list.
Note that most of these modules are taught in German. You may select any of these modules for the elective part, but no more than 15 credit points from modules that are from Bachelor courses of other departments will be accepted.
If the examination committee agrees, yes. You have to obtain written consent from the examination committee. For that, please send a description of the module along with a statement how it would complement your studies to the head of the examination committee.
The following modules from nearby universities are usually acceptable:
No, it is not. However, if you are taking Bachelor modules that sum up to more than 15 credit points, you may include a fraction of one of those modules in order to reach in total the maximum of 15 credit points. Note that no module can be included which is equivalent to a module you already had during your Bachelor studies.