WAEC - Office Practice (2019 - No. 25)
The principles of organization which states that a worker should not take orders from more than one superior officer is
unity of objective
chain of command
span of control
unity of purpose
Объяснение
Span of control: is the principles of organisation which states that a worker should not take order from more than one superior officer. It states tha number of subordinate that a superior officer can take.