Is it possible to add inside lighting

I am making a building and I want there to be light in the building, but I also would like to be able to have a roof on top of the building, canceling out the directional light outside. Is there a way to do this?

@Dabber1337 There are multiple lights besides the directional light. If you create a light, there is Directional Light, Point Light, etc. I recommend using the point light as it will act as an interior light. Hope this helps!