Some organizations rely upon a formal group authorized and responsible for reviewing, evaluating, approving, delaying, or rejecting any changes to any aspect of the project plan by following a formal communication method of documenting the decision process. this group is typically known as a:

Change control group

Explanation:

 The change control group is basically refers systematic approach in which the some authorized group are responsible for evaluating, delaying, reviewing and approving all the change made in the system and the services in an organization.

The main purpose of change control group is that they ensure no unnecessary changes occur during the production and make sure that it provide the high efficiency documenting method in an organization.  

 According to the question, the given group in an organization is typically known as change control group.

Therefore, Change control group is the correct answer.

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