Instructions
Go to "Job" in the game menu.
Select a job for each character. Choose any jobs you want and try different jobs if you are having trouble in the game.
Walk around and enter battles. Battles are initiated randomly as you progress through a map. Defeat enemies to earn "Job Points" (JP). The amount of JP earned varies by job type and your character's levels.
Continue to earn JP until they reach 99. Once you hit 99 JP, your JP will reset and your "Job Level" will increase by one.