What I am doing: testing different configurations of tubular skylights, clerestories, conventional skylights, and windows for daylighting, glare reduction and thermal comfort.
What I want: a nice visual of the light from the different openings, especially, the tubular skylights.
If you're asking with regards to Path Tracer, which is what Twinmotion uses to generate photorealistic lighting, I recommend reviewing the Path Tracer in Unreal Engine | Unreal Engine 5.1 Documentation which explains how Path Tracer works and how lighting results are achieved. There is a lot of Unreal Engine specific information about using it in UE projects, but since Twinmotion uses the same implementation, the explanations of how results are achieved should be relevant.