As technology becomes more sophisticated, autonomous agents are applied more frequently to improve system performance. The current research employed a five step method, including modeling, simulation, and human experimentation to explore the effect of an artificial agent’s timing on the performance of a human-agent team within a highly dynamic task environment. Agent timing significantly influenced the role assumed by the human within the team. Further, agent timing changed system performance by approximately 40% within the experimental conditions. Results indicate that an artificial agent’s timing can be varied as a function of the task demands placed upon the human-agent team to maintain an appropriate level of human activity and engagement. Therefore, agent timing may be controlled to adapt autonomy to provide an apparent continuum along which to control human engagement in systems employing human-agent teaming within dynamic environments.