More detail on accessing and using paths

Is it possible to have more than one path tileset loaded in a graphic bank?
I am using 4.0.11

In my project tree I see graphic bank 1, 2, and 3.
So far I have been able to create a path tileset and load it in graphic bank 1.

Is it possible to load more than one path tileset in a graphics bank?
In project settings >> tilesets the path box is labeled "Path Tilesets"
In the overworld editor, on each screen there is a drop-down to select a path tileset.

So how do you add another path tileset to the bank?
I can't find any way to load, select, add, or create additional path tilesets that will actually show up in the game.

Is it possible?

Thanks