The key to being able to collaborate effectively is an agent's ability to integrate reasoning about the best individual courses of actions with reasoning about who to collaborate with to achieve those goals that lie outside the agent's control. In this paper we present and integrate models of individual and social reasoning that allow an agent to find the individual behaviors with highest utility, determine the structure of teams that can achieve the goals outside its control with minimal cost, and negotiate the participation of agents in these teams. Teams are determined in a manner that specifies which agent achieves every goal, what agents coordinate other agents, what is every participating agent's payoff and what is the total cost of involving the team.