Lv15 off-classes are no longer required for any job.

The requirements for a job that upgrades from a class are as follows:
  • Lv30 in the class.
  • All class quests complete (1, 5, 10, .., 30).
  • Completion of the MSQ Sylph-management.

When those three requirements are met, job quests will appear from either the guildmaster or guild receptionist, depending on the job.