I’m not entirely sure what you are after. I take it you mean you want a spread-sheet like window with interactive cells (I’m confused because you mention Property Sheet). If a spread-sheet like window is what you want, I can point you to Battle of the Bulge - Smithsonian Edition. In that module, I have sheets to keep track of detached units
In each of the white-background cells is a Game Piece which has a Action Button trait to toggle between checked and blank, and Does not stack to prevent the piece from being moved.
That sounds a lot like what I do above.
I use my pywargame Python module to make these kinds of things, which means I can code it up and automatise it, rather than having to enter everything by hand in the Vassal Editor. That makes it much easier and less tedious to do.
Yours,
Christian