yes sometimes it is realy important to have offensive full-backs to save or increase Possession. In most cases i think about narrow formations like ND or 4-3-3. In real life it s very important. Very often they have to attack the flanks alone to cross the ball or to create an additional open man.

But in game we can observe what our full backs do. they will work in Possession without any arrow, but sometimes not enough. In those cases we can set a red arrow and they will help more in attack.

in my last post i forgot to say, i ve noticed that an attacker with red or blue arrow will score more often after Corners and freekicks. and we now such a Situation can decide a game