Please explain the Spanish B/C teams to me

I see a lot of people complain about how this works in FM. When I start a spanish save, if I move a player to my B or C team, there is no option to move him back. I know B & C teams have their own manager and I’m fine with that, I don’t really want to have to control their whole team anyway. But when I move a player to the B/C team, when can I bring him back up to the A team? And are the wages of all your A, B & C team players paid by the main club? And I believe the highest division your B team can play in is one below your A team. What about your C team?

Any insight people have on how this whole system works would be great.

Hello, as i understand and have just tried you can move a player back to the full team by right clicking then "move to affiliate" then just as before but in reverse, however it must be in a transfer window and it seems the player has to be under the age of 25 to move from B up to A. As with C teams I am not sure.

There was something mentioned about this in new patch to stop the spending, but i did not get a response on how to do this so I am not too sure. hopefully someone will help.

on further trying it seems the transfer window does not apply with younger players.

So you can move young players to and from the B/C team anytime? But older players you can only move in the transfer window? The other night I started a Spanish save and moved a player from the A team to be B team and it didn’t seem like I could move him straight back again. I don’t have access to the game right now so I can’t check.

You can select players from your B team in your starting lineup, though I think there may be a limit to the number of B team players you can select in each match.