Rpg Maker Developers Group

I'm trying to make a game where you can split the party to deal with different puzzles, because each party member has a different ability.  Like, one member is bigger than the others, and can easily push boxes or hold heavy stuff that the others can't.

What I need is a script that would let the player choose which party member to play as, go solo for a bit to do that part of the puzzle, and then switch to another character, leaving the first one there until they are all called back to continue in the dungeon.  Preferably, there would be little to no script work on my end, because I don't know how to do it myself.

I don't have any of money, but if there's something you'd like in return that I can do, such as sprites or artwork, or even just fanart of something, not specifically rpgmaker related, I can do that.

example of the kind of puzzles and things we want to do :

Protected download

It's very much just an example.  But I hope it gets what I want to do across?

In this example, you'd have to focus on Purple for a bit, to cut the rock.

Then Green and Blue go to their respective buttons.

Red pushes the rock under the door when it lifts, so that it won't close completely.

Regroup the party, and continue onward.

If more clarification is needed on something in this, please tell me.