How does final fantasy iii learn advanced vocational education?

Hello, the senior profession is to change jobs. Final fantasy iii, a game that starts from the professional status, has no features. With the progress of the game, I was inspired by the crystal in the world, and I got a career that can be changed. You can change jobs in streets, mazes and the wild (after you get an empty boat, you can go to the castle to talk to the king, and then go to the seal cave kiln in the north to defeat the boss inside, triggering the plot. You can jump ship after gaining crystal ability).

The occupations that can be changed are soldiers, knights, dragon knights, marines, monks, hunters, scholars, white Taoist priests, dark Taoist priests, red Taoist priests, feng shui masters and so on. Occupation collocation: 1. Two warriors, a dark demon and a red demon, this is my initial configuration. Wait until you have popsicles and fire sticks. When you come into contact with the crystal of fire, turn to the scholar as needed (to fight the boss in the tree), and then the freedom will be great ... 2. One thief, one black, one red and one warrior, and the basic omnipotent combination 3. One black, one white onion and one magic swordsman.

Hope to adopt, thank you.