Placing at-satrt stacks on different main boards


I am doing a Vassal module of Formula 1 racing where I have 16 boards (16 different race tracks) that, as normal, when startig the module the Vassal asks the player side and which board to chose before starting the game.

My main question is: is there a way of defining at-start stacks for each particular board of the race tracks? (for map windows is really easy, but for main boards I didn’t get it…)

There is also a second, less important issue: after starting the module and chosing the player’s sides is there a way of switching to another racetrack board without the need of closing the game?

Thank you in advance.

José Miguel