Are you sure? The way it works for me (PS4) is that before the match, you can use L2 to switch between the 5 mentalities (ultra defensive through to ultra attacking) and set everything for each of them. But during the match, you can only edit the settings for the mentality that you're currently set to.
So, during the match, if you're currently playing with ultra defensive mentality, you can pause and edit all its settings, but you can't press the L2 button to flick between the settings for the other mentalities. So to change the ultra attacking settings, you have to set your team to ultra-attacking in the match, then pause, then edit the settings for that current mentality. But I can definitely move my players around in that setting.