u/Unlucky-Application8

How do NFL teams decide who is the primary quarterback? For example I thought Fernando Mendoza would be the one playing but then I realized Kirk Cousins was still on as a QB. Is it based on seniority? Does Mendoza have to have a certain number of seasons played? Thanks 🙏🏽

Can someone please explain this to me? I hear it in regards to college football too. How do teams/coaches “manage” the clock so it’s beneficial to them? Thanks 🙏🏽