How to Incorporate
The best way to incorporate new interests is to infuse flexibility in the project plan. A thorough requirements gathering and a well-crafted project initiation documents leads to a robust work breakdown structure, but for projects with changes of changes in requirements, it is best to leave the work breakdown structure flexible, and not go into too much detail at the initiation stage. The work breakdown structure in such cases should ideally cover the broad outline and resource allocation, with the specifics worked out only some time before actual implementation.
To accommodate further changes during implementation phase, break the project into major and minor milestones, leaving considerable slack time, of say, about 150 percent of the time normally required.
Incorporating the possibility of changes in the project plan itself is another way of accommodating scope creep. Have a specific change request system in place for stakeholders make a formal request to change. On receipt of such a request, project managers may discuss the cost-benefit analysis and accept the case. Acceptance automatically triggers a notification to finance, resources, human resources and other departments. Project a band-value rather than absolute values in the initial financial, human resource, and deliverable schedules to cater to possible changes. A key requirement fo smooth execution of this approach is awareness training for the project drivers.
Extending this concept further, structuring the project in an entirely different way may also work at times. Traditional project management is waterfall or sequential based, and changes in any one element cause changes everywhere. A modular approach of breaking down the project intro smaller units or parts, completing each unit independently, and joining it together helps. In such cases, the changes requirements affect only the specific module. This approach suits software and other projects, but may not be possible for all projects.