Recently started the game and I am fairly new to it. I have a question regarding the trust system and the npcs I can recruit. I started out in Bastok and was able to get naji for my first npc. The dialog lead me to believe I can acquire the other 2 in the other main cities. I went to Sandoria and talked to Gondebaud but he doesn't initiate a quest to get more npcs. I am currently level 21, so when can I get the other 2 npcs to join my party?

Thanks