Job Master Achievement in Octopath Traveler II

There are 12 jobs that you can get "licenses" for in the game. One unique thing they added to this game was the ability to get second and third licenses for jobs so you could equip the same job to multiple characters, but that isn't required for any achievement, just getting the initial license. Most of these are given just by finding the guild that teaches the job, while some have minor extra requirements. All of the locations and requirements are outlined in the video below.