Unfortunately, you can't be a class representative while holding other StInn roles, with a few exceptions.

In StInn, it's a goal to avoid role conflicts, and therefore a principle that one cannot hold multiple offices in StInn simultaneously. If you are elected to another role in StInn, you can no longer cast a vote in the Student Council. Therefore, someone else must represent the class in the Student Council. StInn representatives can of course still assist their class representative with their tasks in the class.

One of the few exceptions is that one can both be a class representative and a delegate in the Student Parliament, so there is no obstacle to running as a candidate when the election is conducted in September. None of the roles in the Local Executive Committee can be combined with being a class representative.

If someone already has a role in StInn, they must resign from that role before they can become a class representative. A StInn representative who is finishing their term in the summer can of course be allowed to run as a class representative, if the class is to choose a class representative for the next academic year before the summer vacation.

Please note that you can still be a class representative while being a student representative in INN's councils or committees, even though StInn is involved in the appointment process.