I would like to now that too. i have a house with multiple rooms where i can turn lights on and off. At the moment i use dynamic lights in those rooms, its a problem with optimisation, but also indirectional lights which for now i added manually as seperate lights, but thats an ugly solution, because they have to cast shadows, so they dont bleed out of the room. It would be nice if i could bake those lights and turn the room-scenarios on and off with blueprint