You promote one company during the first two chapters (Obtain at least 280 points) and then switch to the other company and get a total of 400 points in the next two chapters to complete it. (Its not available during chapter 4.)

Quich question. Is it okay if you miss some points? Right now, I'm also in chapter 1 and out of 180, I have 170. I guess I missed some people somwhere :\ But does it matter anyway if I miss some?