Garfield

Here is my problem:

I'd like to have two NPC joining the party together, and leaving it together. Which command should I use in a dialog to obtain it?

Thanks

I post here about a mod idea I started to devellop in the french modding community: the return of Dynaheir.

First, the scenario:

Irenicus killed Dyna (well, actually we think so). But we will discover the truth: as the PC is a Bhaalspawn, Dynaheir is a spawn of Oghma. Irenicus decided not to kill her to study her, the same way he studied the PC and Imoen. So Irenicus didn't killed her, but he doesn't care since he believes she's dead, buried in the building.
But Dynaheir's divine essence preserved her from death, and she had to escape the ruined dungeon by herself, which was a great shock for her (she just discovered she is a divine being, remember?^^)
But this shock wa sso terrible to her that she lost memory of who she is, where she is from, etc... This mean she doesn't know she is a Rashmen Hathran, and she doesn't know she can use magic.
Priest of Ilmater found her and bring her to the temple of Ilmater in Athkatla. There she stay until the PC comes. The PC will be given the choice to help her or not. If he decides not to help her, Minsc leaves the party (if he's in^^).
To help, the PC need to find something to bring memory back to Dyna: her diary.
The diary have been taken by the Shadow Thieves in the dungeon (not by the vampire, Bodhi doesn't care about that stuff...). To get it, the Thieves will ask for a simple mission: stealinf a blade in one of Athktla's noble house. The PC can have the blade by fighting, discussing or paying.
Back to the shadow thieves, the demand a little extra gold with the blade to give the diary back.
Once the party get the diary, the PC will have to show it to Dynaheir. Reading it, the witch will rise (nice movie title^^), she will say the word "Oghma" and leave the building.
The PC will find her in Oghma's temple. There will be a little discussion between Dynaheir and Oghma's priest: Dynaheir has been put in a magical coma by Oghma himself to protect her from Irenicus' ewperiment.
Afterwards, she will be able to join the party.

Modification of the BG1 character:
-18 intelligence instead of 17 (to compete with Edwin): the magical coma strenghten the link between her and the God of knowledge).
-new cure spell (added to her original "slow poison"): she is a hathran, and hatran are witches but also healers (not as godd as priest of course). She will have a few cure spell as innate ability.

Dialogue:
-Fight to death with Edwin
-Teacher with Nalia and Aérie
-Philosophical dialogues with other god's children (PC and Immy). But Immy doesn't like these kind of boring dialogues, so I think I can do something funny.
-Annoyed by Jan
-Loathe Korgan
-Friend with Keldorn, same ideals
-Amused by Anomen's impatience
-Admire Cernd's wisdom
-Little competion with Jaheira to determine who has the more power on the PC
-Tense relationship with Valygar at the beginning, but it will grow better.
-Haer-Dalis=??

Has for mod NPC, I only know Tashia and Kelsey. She will go along well with Tashia: both are calm, intelligent ladies. With Kelsey, she will be a little teacher-like (like with Aerie and Nalia). But she will be more impressed of Kelsey, whose magic is natural.

And the particular interest of her journal: a little fanfic I'll try to write about her, her family, her childhood, etc...

So, what do you think?

Thanks