Need some help with RPG Maker 2003

Hello everyone I just signed up to this site and need some help.
I've been messing around with RPG Makers in the past and could never figure out a few things. First, I don't know how to do boss battles. Let me explain. I know how to set up the script thing, so that you have to talk to a character and then the fight starts. I just don't understand how to make that boss's npc dissappear after the fight when the player wins so that they can't keep fighting the same boss over and over again. Second, I can't figure out how to add second characters so that they are in the party after the game starts. I get them added but they don't show up in the battle screen. Thanks for taking your time to read this everyone I will be checking back often so see if there are any replies.

To make the NPCs disappear, turn on a switch after the battle processing event command. Then make the second page of the event without the graphic and set as its condition that switch.


To add new characters to the party, there is an event command on the first page called Change Party. Click that and choose the actor you want to add or remove.