N.D. Cent. Code § 3-02-13: When agent can delegate powers

An agent, unless specially forbidden by the agent's principal to do so, can delegate the agent's powers to another person in any of the following cases, and in no others:

1.When the act to be done is purely mechanical.

2.When it is such as the agent personally cannot, and the subagent lawfully can, perform.

3.When it is the usage of the place to delegate such power.

4.When such delegation is specially authorized by the principal.