Wall map won't work? Sure it can....with a few modifications. Let me describe my system.
First of all, I "prooved" my system with a local cab company, while they were having some problems with their new software.
Take a good street map. Get it plastic coated. Glue it to a piece of sheet steel.
The hardware store has rolls of magnet material, that you can write on, and can cut to length. Or, just buy a bunch of magnets.
Write names on magnets. Place on board to show current location (or, if en route, destination) of each man.
