One of the principal duties of an agent is expressed by the maxim “delegates non potest delegare.”State and identify five circumstances under which this rule or maxim does not apply

This maxim literally means that “delegates must not delegate.” This maxim does not apply where
o The sub-delegation is authorized by the contract between the parties.
o It is authorized by law.
o It is affected with the principal’s knowledge.
o It is authorized by trade usage or custom.
o It is reasonably necessary for performance. o In cases of emergency.