Bug Hunt - How many grunts/combat teams?

Hello! I am very new, and am looking to start a game of Bug Hunt. However, I may be missing something for how many grunts and combat teams you have on a team.

The book says to have 3 main characters, and then 2-4 grunts per combat team. Does each main character get their own combat team?

It may not matter too much, but I just wanted to be as accurate as possible, since that could mean a swing of 2-4 grunts on the ally side/even more miniatures to print out!