Experienced Teams' Advice

[Jengles]

This year was my team's rookie year. We had 12 kids come out for the team, and we won Rookie Allstar and will be traveling to St. Louis. We have had almost enough interest from other students where we plan on having more than three times the size of our team for next year. I was the only captain of the team, and the only form of organization was loosely put together subsystems. (like programming, electrical, and hardware which was divided into more sub levels). My question is to the larger more veteran teams. How do your teams implement organization, where everybody gets to work where they want but not everybody is working at the same job?