A minimum requirement for applying the 'change' theme in PRINCE2 is to document the format and contents of the issue register. This ensures that all issues, including requests for change, are captured systematically and managed appropriately throughout the project lifecycle.
= PRINCE2 7 Foundation handbook and online resources

The Controlling a Stage process ensures focus on the delivery of a stage's products and helps avoid uncontrolled change by managing by exception, authorizing work packages, and monitoring the stage's progress against its plan. References: PRINCE2 Foundation Training Manual; PRINCE2 2017 Foundation handbook.

One of the key responsibilities of the project board within PRINCE2 is to ensure effective communication with external stakeholders. This involves overseeing the project's strategic direction and ensuring that stakeholder needs, expectations, and communications are properly managed and addressed throughout the project lifecycle.
= PRINCE2 7 Foundation handbook and online resources

The project manager needs to prioritize several criteria that the project product must meet for acceptance during the step of 'Describing the quality management approach'. This step involves defining how quality will be managed throughout the project, ensuring that all quality criteria are clearly identified, prioritized, and agreed upon by stakeholders. References: PRINCE2 Foundation manual and quality management technique guidelines.

A project brief is produced to provide a full and firm foundation for the initiation of a project. It outlines the project objectives, scope, constraints, and the project management team structure, setting the stage for detailed planning and initiation activities. References: PRINCE2 Foundation Training Manual; PRINCE2 2017 Foundation handbook.