I know there are 2 sub-job quests which you can do at level 18. I also know that you can get flagged for each of the 9 secondary(advanced) jobs at level 30 and can have each and every one of them. What I would like to know is if you can get 2 additional primary sub-jobs from those level 18 quests. (ie. Start with War, then after 18 add Monk, then later add Thief. This way you could mix War/Mon, War/Thi, Mon/War, Mon/Thi, Thi/War, Thi/Mon if you really wanted to.)
I want to be able to swap around 3 different primary jobs. What I would like to be able to do is have WHM, BLM, and THI. I could do my healing and black mage things with whatever combinations with advanced jobs later on as well as be able to dabble with thief treasure hunting or even possibly mix that with ninja or samurai if I chose at a later time. The reason this prompted me was because in some poster's signatures, they have 3 primary classes listed. I could probably try to reply to their posts and get off topic, but decided to ask it in a new thread here.