Can we see those rules? We have some problems managing a large combat (4 PC, a dog, admirer, 10 gang members vs 1 boss with 10 gangmembers...) it took one session....
Here is a "fairly good" translation of the most important parts. The part that have changes is the "zonecrawl" with a gang. The Ark things is unchanged (racketeering and project).
Bonus: Your Skill Level in
Command is equal to your gangs bonus - a positive modification to your skill rolls. The members don't counts as individuals. The bonus can decrease when the gang takes damage or don't get enough grub. The bonus can never be higher than your SL in Command.
Conflict: You can use your gang when you
Fight or when you
Manipulates. If you have the talent Gunslingers you can even get help from the gang when you
Shoot. The gang can't be used for any other skill rolls. You can't at the same time get any help from another PC.
Enemy groups: In combat with a group of enemies that is as large or larger than your gang (still 3-4 members per SL), your gang is busy with fighting for themselves. In those cases you don't get the bonus to your skill rolls. On the other hand, you will have fewer enemies to fight. The outcome of these battles is determines by the GM without rolling any dice.
Trauma: An enemy can select to attack you or your gang. If he attacks your gang, the bonus is decreased by one for each trauma that the gang takes. If the bonus reaches zero, the gang is either dead or have fled (you can get new gang members at a safe place). One ration of grub heals one bonus point.
Ammo: If you have the talent gunslinges, you don't have to spend any ammo for your gang, they always have enough.
Grub and Water: In the Ark you don't have to give your gang any grub and water, but in the Zone, you must spend one ration of grub and one ration of water per bonus point. If you can't, the bonus decreases. You can opt to take a smaller part of your gang out (i.e. bonus +1 or +2 instead of +3).