The extra activatable column Author (Besitzer) is either just wrong translated in german or it is filled with wrong content.

The extra activatable column Author (Besitzer) is either just wrong translated in german or it is filled with wrong content (see screenshots).

In any case the field "Author" (at Info-Page) is missleading somehow, as people mix up with system roles.

Perhaps is would be better to call it "Lecturer", "Copyright", "Organizer"