Actually Lunar, your comment is false and very misleading. You can conjure spirits. It's summoning which is a part of many paths and very real.
It has nothing to do with controlling and the poster didn't mention a thing about "control". Many people summon or call upon spirits to ask for guidance and knowledge. It has many names, including invoking, which many people do with their deities.
So yes, you can conjure a spirit and no, it's not roleplay.
As to the beings you are asking about, I have no idea, however you can do a ritual anywhere you have room and are free of distraction.