i master a job before moving on to the next.my style:

bartz:knight,sorcerer,samurai

reena:white mage,red mage,time mage

faris:thief,monk,ninja

galuf/(SPOILER)krile:black mage,red mage,summoner

after i master those jobs,i am near the end already.so i start mastering ALL jobs (especially the mime).when i have all jobs mastered,my job assignment is this.

bartz:bare (mastered)

reena:mime (mastered)

galuf/(SPOILER)krile:mime (mastered)

faris:bare (mastered)

that's basically it.hope i helped.^_^