Which troop leading step involves the leader finalizing any modifications to their plan?

The 'Complete plan' step involves the leader finalizing any modifications to their plan.

The United States Marine Corps' strategic planning method to accomplish mission objectives is a set of troop-leading steps following the 'B. A. M. C. I. S.' acronym:

Begin Planning Arrange Reconnaissance Make Reconnaissance Complete Plan Issue Order Supervise

The 'Complete plan' step involves tweaking the theoretical plan once there is enough information at the planner's disposal.