Changing head coaching jobs in Universe/Multiplayer mode

I’m wondering how to actually get hired by a different school in either Universe or Multiplayer mode? Or is the school you start with the school you are stuck with forever? I would like to try different strategies at smaller schools and then work my way up with 2-3 different coaches but no matter what I do I can’t seem to get hired at a new school. I’m not sure if it’s because I’m already employed at a school but the schools I’m at keep extending my contracts so I can’t leave if I wanted too unless I retire. I’m not trying to jump from a 15 prestige school to an 80 prestige school or anything like that. If I’m at a school for 10 years and raise its prestige from 17 to 50 or so and then I try to move up a slightly better conference to a school with maybe 30 prestige I’m never hired but my assistants will be by the school I applied to. Is there a certain way I need to download files and import them or should I just give up the dream of having 3 coaches rise the ranks and just stick with one at a time in challenge mode?