The present invention is a computer decision tool for use in a system for controlling a team of unmanned vehicles. The computer decision tool includes a system performance model for receiving interface usability, automation level and algorithm efficiency variables and an operator performance model. The operator performance model receives task management efficiency and decision making strategy or DM efficiency variables. The system performance model is responsive to the interface usability, automation level and algorithm efficiency variables for providing a system performance status signal. The operator performance model is responsive to task management efficiency and DM strategy variables for providing an operator performance status signal. An operator capacity decision model is responsive to the system performance and operator performance status signals and a workload variable for providing a decision signal representative of an adequate team size or an optimal recommendation, such as changing the team size.
