A new team member looking to understand the project team structure and reporting lines should review the
'Role Descriptions'. This management product provides detailed information about each role within the project, including responsibilities and reporting relationships, which helps new members understand their place within the team and to whom they report. References: PRINCE2 Foundation official guide and project management templates.

The 'benefits management approach' is the management product the project manager should produce to plan reviews for confirming whether the expected measurable improvements have been achieved. This approach outlines how and when the benefits of the project are to be measured and assessed, aligning the project's deliverables with the intended outcomes.
PRINCE2 7 Foundation documentation on benefits management.

The purpose of the 'controlling a stage' process in PRINCE2 is to ensure that the stage stays on course and reacts to unexpected events. This includes taking corrective actions when there are deviations from the stage plan that can be managed within the tolerances set by the project board. References: PRINCE2 Foundation Handbook, Controlling a Stage section.

hen the project board reviews the Project Initiation Documentation (PID), it is essential to ensure that the PID is aligned with the business objectives. The PID should encapsulate the project's definition, including the reasons for undertaking the project, the benefits expected, and how it aligns with the broader business goals.
Ensuring this alignment helps validate that the project remains viable and worthwhile as it progresses.
(PRINCE2 7 Foundation Handbook, AXELOS)