a level inside a level, or data layer using the world partition.
in this case pack separately as an extension of the game (DLC)
I’m checking on this modular game features that were promoted with Lyra and the Valley of ancient, since it seems the way to do it, maybe I’m wrong. Or maybe like many things with unreal it can be done in other ways.
In this case is for a virtual exhibition, we have the main level with the building, and after we have a sub level with the specific exhibition, that will be changing with the time, so we will prepare this DLCs with the specific exhibition content. Is more since the building can hold more than one exhibition at time we shall be able to change those areas separately.