There isn't a man-marking style. It doesn't exist in modern football and not in FM.
At best, 1 (maybe 2 at a stretch) key players will be specific man-marked. If your tactic is balanced, it'll rely on more than just 1 player. Decent movement between the lines and passing should easily get round this. Also, make sure that the player who is marked has an advantage man for man against his marker.