Obtaining the “Soul Crystal” of the Job requires you level up your main class to 30, and sub-class to 15. Your guildmaster will direct you to your Jobs “Guildmaster” once the requirements are met!

Confirmed ALL:
◾Bard / Paladin / Warrior / Monk / Dragoon
◾White Mage / Black Mage / Summoner / Scholar

Advanced Job
Base Class (Level) -> Secondary Required Class (Level)
◾Bard: Archer (30) -> Pugilist (15)
◾Paladin: Gladiator (30) -> Conjurer (15)
◾Dragoon: Lancer (30) -> Marauder (15)
◾Warrior: Marauder (30) -> Gladiator (15)
◾Monk: Pugilist (30) -> Lancer (15)
◾Scholar: Arcanist (30) -> Conjurer(15)
◾Summoner: Arcanist (30) -> Thaumaturge (15)
◾Black Mage: Thaumaturge (30) -> Archer (15)
◾White Mage: Conjurer (30) -> Arcanist (15)