According to which principle of management, "Organisation should have a chain of authority and communication that runs from top to bottom and should be followed by managers and the subordinates?"

Scalar chain

An organisation consists of superiors and subordinates. The formal lines of authority from highest to lowest ranks are known as scalar chain. According to Fayol, “Organisations should have a chain of authority and communication that runs from top to bottom and should be followed by managers and the subordinates.” According to Fayol, this chain should not be violated in the normal course of formal communication. However, if there is an emergency then they can directly contact other of same level through ‘Gang Plank’. This is a shorter route and has been provided so that communication is not delayed.