Hey @kribbeck, thanks for your input. This seems to get a lot more complicated than I expected 
With “TriggerVolume” you mean just a standard box collision and than handling the “On Begin Overlap”-Event, right?
I tried this but hit another problem. Collisions seem only to be checked while my character is moving. So if I walk my character in a way that the camera ends up in another actor the Event is triggered. But if I use the mouse to move the camera around the collision is not triggered. Any idea how I could get around this?
@L.F.A I tried your solution as well, but it didn’t work. With a invisible static mesh I now can move the other actors around by “pushing” them with the camera.