A principal delegates a project to a team S from a pool of n agents. The project's value if all agents in S exert costly effort is f(S). To incentivize the agents to participate, the principal assigns each agent i ∈ S a share ρi ∈ [0,1] of the project's final value (i.e., designs n linear contracts). The shares must be feasible—their sum should not exceed 1. It is well-understood how to design these contracts to maximize the principal's own expected utility, but what if the goal is to coordinate the agents toward maximizing social welfare?