The Quality Management Approach in PRINCE2 should provide guidance on how and when prototyping is to be used within the project. This approach outlines the quality techniques and standards to be applied and the responsibilities for achieving the required quality levels. Prototyping, as a method to validate product quality and user requirements early in the development cycle, falls under these guidelines.References:
(PRINCE2 7 Foundation Handbook, AXELOS)

The purpose of the quality theme in PRINCE2 is to define and implement the means by which the project will ensure that all products are fit for purpose and meet their requirements. This theme is essential for planning, designing, developing, and delivering products that satisfy the customer's expectations and standards defined for the project.References: = PRINCE2 7 Foundation handbook and online resources

PRINCE2 recommends three levels of planning (Project Plan, Stage Plan, Team Plan) to reflect the needs of different levels of management involved in a project. Each plan serves a specific management purpose and addresses the needs of different management levels within the project. References: PRINCE2 Foundation official documentation and study materials.