[RMVX ACE] INDEPENDANT PARTY MEMBER MOVEMENT.

The basic premise of a multi-party dungeon would indicate that the game "remembers" the position of the other parties when the context of the game switches between parties. Which translates to using a set of game-variables (one variable for the x coordinate, one variable for the y coordinate, one variable for Map ID) and one event (per map?) for however many different parties the characters split into. To say nothing about keeping track of who's in what party. Forcing who goes where might be the best option, but, for something like FF6's multi-party dungeons, you might need a few extra variables to keep track of ID's. Or, maybe you use game-variables as their own array to keep track of the marching order of the various parties?

Getting everyone back together would likely indicate maybe a short cut-scene, as the separate party events move into the "main" party, and the characters are added back to the "main party".

Setting things up so that a switch is active only when a party is standing on it can be tricky. Like, it's one thing to set up an event page to trigger with "On Hero Touch" with a priority of "Below Hero". "Hero", in this context, generally refers to the player-character. However, if you've set aside specific events on each map in the multi-party dungeon that could contain a party, you may be able to use a Conditional Branch to determine the location of those events versus the location of the switches that would need to be stepped?