Two navmeshes ignoring different actors

Hi,

I have two types of AI pawns in my game. Some react normally to obstacles, and others behave like “ghosts” and can move past some objects that have a specific object type.

I would like to have two overlapping navmeshes, one that ignores the objects that can be walked through by the ghosts, and one that doesn’t - then assign my AI pawns to the proper navmesh for their movements.
I can’t seem to find a way to achieve that… any clue?