Krakki is a hobgoblin. He’s the leader of the group, so you should use him to set the disposition. His Drive Off disposition is 2. He has three goblins and four helgeit with him. Each contributes +1 dispo, so their starting disposition is 9. Those points must be distributed between Krakki, the three goblins, and the four helgeit. Likely you’ll give Krakki 2 points and everyone else one point a piece.
Krakki rolls his own nature + any help when he’s acting. Others on his side can help. But everyone in the group, including the helgeit can be given actions and will roll their own nature when doing so.
Just like with players, everyone on Krakki’s team must take an action before anyone on that team can take a second action. You can absolutely choose to give the helgeit all three of the actions in the first round. But that means you need to give the goblins and/or Krakki the actions in the second round.