Right now just do whatever. Play around. Don’t consider what you find out as the answer. That is all artistic and not really technical. That isn’t what the skylight is for. You could just make the ceiling non shadow casting when the player goes indoors with a world blueprint or something. You’d have to spawn the static mesh in the blueprint at load so you can modify it… At least last time I did that in UE4 you did, haven’t tried that in UE5 yet, sorry.
Edit: although… if you use the correct Lumen settings and hardware Lumen with the right lighting mode console command the propagated light from any windows or openings should be enough. You really only need skylight if you care about reflecting the volumetric clouds and sky atmosphere. Again, it’s artistic. Sometimes you get more lighting if you also have ray-trace shadows enabled in your project settings and in the Skylight settings.
Edit: this video might not help you in an obvious way because it’s completely unrelated but maybe just the visual content of this video that I did recently might spark some ideas even though I’m bug testing and trying to troubleshoot something but you could just kind of see what I’m doing right now… I dunno… It’s not with the Early Access version of the engine it’s with a now out of date ue5 main that I’ve compiled… But still