JoinParty
This hook is triggered whenever a character joins the party. It was initially implemented in order to allow the designer to memorize spells when an NPC joined the party.
This hook is triggered when the player selects EXIT from the Add Character menu. This hook is triggered for each selected character that is not already a party member. If the character is subsequently removed from the party and then added again, this hook will be triggered again. If you want it to happen only the first time a character is added, then you should give the character some sort of Special Ability (for example: “Already Joined Once”) and your script can check for that Special Ability.
Parameters
none
Context
Combatant