I'm managing Chivas waiting for FM23, the format is 17 matches, then playoffs, but the schedule is shown as vacations after the 17th game, and unlocked if you qualifiy every stage, so... there was a Mexico - Haiti game in the possible semifinals, they were called up and i wasn't asked to postpone one of the legs because i was 6 players on national team and 3 on u20, i had to put an u18 gk. Another thing of mexico (not bc the game), but there are no relegations or promotions for 6 years IRL, so I cant tell you if the 7th season there will be because Im in the middle of the 2nd season hahaha
Cheers