Hi! I'm following the documentation, but I don't understand how to use lighting.
I placed the WorldEnvironment object inside the room, but nothing really changed. I don't understand if I need to place PointLights and SpotLights or make them the parent of objects that I want to cast light on.

Thanks in advance!

Yes, you only need the world environment and you can start placing lights within your room. Check out the example project to see how lighting is handled in demo 4. :)