Scope management plan contains scope planning, execution and control. Scope management is created as a part of Define Project Management plan process and is not included as a separate scope management process.
Scope management plan answers the questions listed below:
How will the scope be achieved by the project?
The tools required to accomplish the project scope
The enterprise environmental factors required for accomplishing project scope
The organizational process assets required
How the scope is managed and controlled throughout the project?
Organizations should have templates, forms, or standards for scope management which are critical for any project. Scope management plan may have topics that can be standardized for the organization. However, every scope management plan is unique. The project manager uses the scope management plan as a baseline to guide and measure the project until it gets closed. Scope management plan is a part of project management plan. Like other knowledge areas, a scope management plan may not be developed at one time. However, it could be developed in stages, or iterated, during project planning.
The project manager first determines how to define the scope. Once the project is completely planned, the project manager has enough information to decide how the scope will be executed and controlled. These decisions then become part of the scope management plan. The project manager can use another aspect of iteration. In this iteration, the later parts of project planning, such as the Human Resource planning process can add a new scope to the process, thereby changing the scope management plan. A project manager is required to have a good understanding of the project scope to create a scope management plan. It is a major mistake to work on a project before the product and project scope are identified. Creating a scope management plan is a required part of project management.