Document each change request decision in writing. Note the reason for the decision and communicate the results to team members, appropriate stakeholders, and to the submitters.
Log the disposition of each change, and add the change decisions to your project information archive, for use in project reviews and analysis of lessons learned.
Update project plans and documentation as necessary, and revalidate the project baseline following any accepted major changes.
Implement all approved changes promptly, and monitor for expected results and any unintended consequences.