Managed to get Prorender installed at home, checked my preferences and it's checked on. It's available from the dropdown list. I haven't tinkered much with the settings. I figured I'd be able to see at least.. something? What I have now is a nice deep-blue screen where I can see the light objects but not the lights, and the thing crashes and takes Blender with it if I rotate the viewport too much.
I'm a newbie at both rendering and this particular renderer, please be gentile. I figure that there's a switch that I forgot to tick on or something. Maybe this renderer needs a special camera or something?
Eevee and Prorender screenshots attached.