Can't figure it out..

I am trying to make it so that in order to progress in my game, a certain person must join the player's party first. The person ties directly into the story line, and I want to make it so that if the player chooses not to let the person join the party, then they won't be able to progress in the game. I thought about having like a sequence where the person opens a door.. but yeah.. that can't be done if the person isn't there.. so .. yeah. Can anyone help me, please?

I dont get it. In ENGLISH please!

I do know however what you are trying to involves switches.

http://www.crankeye.com/forums/viewtopic.php?t=4297
find my post, ignore everything else

then when you go to that place you want to go only with that member make a conditional branch and check if hero X is in the party (it's in one of the conditional branch tabs)

conditional branch:

<> if "character name" in party
<>advance through game etc. whatver blah blah.
else
<> message or whatever