Thanks for your answer nionios.
Not criticizing the mod or anything, But i must say i dont like this new feature very much.
It does render the man guns buttons useless. Even in SH3, if i spotted a plane and decided to fight it, ordering man flak guns was enough. If i have to go and manually drag men to their stations, then those buttons are useless.
I also read something about having to constantly move crew arround to/from the conning tower. One thing i dint like about SH3, fixed in SH4 was having to babysit my crew.
I wish there was an option to install just the new campaign & units and skip the new gameplay changes ("features").
I wonder if i can edit the mod to un-do these features and just enjoy the new campaign.