The principle of 'Ensure continued business justification' in PRINCE2 requires that the project remains justified throughout its lifecycle. By reviewing the benefits management approach to ensure it includes sufficient benefit reviews after the project's closure, the project board is applying this principle to confirm that the project continues to provide value and that its benefits are realized as planned, even post-project.References: = PRINCE2 7 Foundation Training Manual and official PRINCE2 website documentation

A minimum requirement for applying the quality theme in PRINCE2 is to define quality criteria within product descriptions. This includes specifying what the product must do, the standards it must meet, and how quality will be evaluated, ensuring that all project products deliver against the agreed-upon requirements and standards.References: = PRINCE2 7 Foundation handbook and online resources

PRINCE2 mandates that the roles of the project board be used as defined, including the Executive, Senior User, and Senior Supplier. However, it also allows flexibility to define additional roles as required by the organization or project context, ensuring adaptability and compliance with the method while accommodating specific project needs.References: = PRINCE2 7 Foundation handbook and online resources