What are the roles and responsibilities in project organization?

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This step is about understanding the responsibilities of the key roles in a project. The project manager is the most important role and is responsible for planning, execution and closing of the project. The project owner is responsible for ensuring the project receives necessary resources and approving any changes outside the project manager's authority. The project director is responsible for ensuring the right projects are performed properly and for the implementation and maintenance of good project management practices. The reference group is an advisory board with respect to functional or organizational issues.