Rooms should be booked using the campus management system (HohCampus).
To book a room, you either need an appropriate role, e.g. "Event Manager" for your institution, or contact an Event Manager for your institution.
If your institution director agrees that you should have the Event Manager role, then please request this using the form:
https://kim.uni-hohenheim.de/veranstaltungsmanager
You can find more forms and instructions in KIM’s HohCampus link collection.