Design Development Plan is certainly the crucial component in a project. DDP ensure traceability of design and development outputs and inputs to design. I think the quality management plan is more important than communication plan. The quality unit has the responsibility and the authority to approve or reject all components, product elements, labeling, in-process materials, and the authority to review production records to assure that no errors have occurred during manufacturing, or if errors have occurred then, they have been fully investigated prior to continuing the process. This department is present to ensure that data are generated, documented, and reported in compliance with regulatory requirements.