only 3 people in my party to rescue sarah from evil tower?

in sankt leona inn, I went to coryool and guanidia right after coming out from sankt leona after sarah kidnapping. after taking coryool and guanidia, I went straight to luciana in the reception desk where leanda and wendala appeared (in that order) to offer their help. after some talking, random ordered the team to split in two, leaving only random, coryool and guanidia in the team entering evil tower. how can I add the fourth person into my party? the boss is quite hard to del with only three-man team. thanks

there is a good Laxius Power Walkthrough by Moxy...just google it. I am not currently at the stage of the game you are in but the walkthrough might help:)

okay, could you please help me with the other problem?
https://laxiuspower-shrine.rpg-board.net/t300-can-t-find-library-in-the-evil-tower-s-main-lab
thanks

Did you try going into your items and clicking on the Yveen pendant? Also did you check and make sure your characters were equipped? Just because Random said to split into two parties doesn't mean that it only has to be 3 characters per party...

solved it by going all the way back to HQ in rillian plains. sigh.... oh well, at least I can proceed