making a Party Selection system for RPG Maker 2003

i have to thank everyone who had helped me with my other problem and i've started a new project with the new world map that i was able to create using the switchs but i need help again and i'm sorry to bother people with this but i need to know how to create a party selection system, you know the system that the Final Fantasy when you have more people than what you can have in your party at one time, but the ting is that i want the system to lock up certin characters in the party if they have to be in it (like the main hero)

You'd have to use a switch, on a new page when the character is needed. Then just fade out the character a little bit. On the event that removes all members from party (if you have that option), make a fork condition preconditioned with the switch you just activated.

In the Else option, make it remove the character. Do that for all characters in your party.