Would welcome a way to nest POI's under a main POI.

I’m currently in the process of fleshing out a Castle like location interior and exterior. To say it is starting to feel crowded is a understatement, I have 12 pois in rows of 3×4 for example. Naturally, I can scale the place up to be larger to give more breathing room. But the scale gets higher then I desire for this minor but important castle.

Would benefit from a way to add say the main POI being the Castle name and then I can put pois within that location instead of the world map I’m thinking? 100% zero idea if that is feasible with how things are coded honestly.

Or maybe there is already a better way of handling this and I just haven’t figured it out outside of just scaling the place up bigger..