Hardly any other profession is as versatile and demanding as the professorship, which enables independent research and teaching. Within this framework, young academics are supervised, examinations are conducted and teaching obligations are fulfilled. In addition, there are tasks in the self-administration of the universities. Furthermore, research funds can be raised and research cooperation agreements made. Depending on the regulations, staff and material re-sources are available for these tasks, which are the subject of the appointment procedure. There are usually clear differences between a W2 professorship and a professorship with its own chair (W3).