No; you are free to choose any modules that fit the parameters described in the question above. There are contingents available for only the Department of History and Cultural Studies (see question on contingency agreements below). Outside of this contingency agreement with the Department of History and Cultural Studies (German abbreviation: GeschKult), you can complete a full module at any university or college of your interest, provided the parameters listed above apply and the professor/lecturer responsible for each course has agreed to your participation.