Explanation/Reference:
Reference https://www.prince2primer.com/tailoring-prince2-methodology/

One advantage of applying the 'manage by stages' principle in PRINCE2 is that the project is broken down into manageable stages, providing decision points (stage boundaries). This helps in maintaining control by providing opportunities to review and, if necessary, adjust the project's direction and ensure it does not run on in an uncontrolled manner.References: PRINCE2 Foundation Manual

The Organization theme does not include defining the level of tolerance for each level of the project management team. Tolerance levels are typically set within the Plans theme, which deals with how the project is structured in terms of stages and the delegation of authority within those tolerances. The Organization theme primarily focuses on defining roles and responsibilities. References: PRINCE2 Foundation official study guide and materials.

Section: Volume A

The lessons log in PRINCE2 is used to record any lessons that can potentially improve future projects or stages. These lessons often originate from experiences documented in checkpoint reports, among other sources. References: PRINCE2 Foundation Handbook, Lessons Log section.