The project staffing management plan will define how resources are brought onto the project team, how they are managed while on the project team, and how they may be released from the project team. The staffing management plan is part of human resources plan. It is a subsidiary plan of the overall project management plan and defines when project team members will be brought onto and released from the project. It describes when and how human resource requirements will be met. Depending upon the needs of the project, it can be formal or informal, highly detailed or broadly framed. The staffing management plan may include the following items: Staff acquisition, resource calendars, staff release plan, training needs, recognition and rewards, compliance, and safety.

Answer option D is incorrect. The communications management plan defines project communication requirements and expectations.

Answer option C is incorrect. This is not a valid project management plan.

Answer option A is incorrect. The project schedule management will define when resources are needed and scheduled. But it will not define how resources are allowed to be released from the project.