The principle states that each person should only report directly to one supervisor.

The unity of command principles states that each person or subordinate should only report, or be accountable to only one boss or supervisor. Basically, It means receiving orders or command from only one supervisor. It was promulgated by Fayol in his 14 principles of management, where he quipped. "Dual command is a perpetual source of conflict." One supervisor or if you will, boss, should give order to an individual so he understands and perform optimally; adding more bosses or instructors would set in disorder and confusion. The premise is that If there are two, three or more drivers are trying at the time to drive a one wheeled vhicle ( a subordinate is one wheeled) then nobody drives the car. He also wrote about other principles as well like discipline, unity of direction, remuneration, order, line of authority and others.