Before we carry on, I think it's important to just state in what order the party members are recruited...you know, to start developing a storyline and making sure party banter is accurate. This also has their recruitment mission.
Osric Silas - Go to Turund and convince a mob to stop pestering Osric
Nigel Avtrin - Go to Tonjir and form a gladiatoral team with Nigel to help him win the trophy
Rebbecca Kappu - Go to Ormyrban and enter the backalleys. She will pickpocket you. Chase her and catch her and offer her mercy and she will join you.
Pilgrim - Go to Zoratin and go through some ancient ruins to find Pilgrim, who is searching for the High Monk
Whisper - Go to Longmyr and save Whisper from a Kativan raid
Dorgan McCullen - Go to Sykdnjir and survive the prison break. Hide Dorgan from the wardens to get him to join you