Under which rear detachment commander function does developing a staffing plan fall

I believe the answer is: operations and training

Operations and training involve all efforts that being done from training recruiters/staffs and give them with set of skills that are necessary for the operation, and managing on site operation to ensure that every part of the plan is carried out properly.

answer; conditional stimulus will trigger a conditioned response;

answer; you can turn right on a red signal (when posted);