To manage scope changes that threaten program timelines, promptly communicate with stakeholders about the impact on timelines and resources. Prioritize tasks to focus on critical path activities that directly affect the end date. Implement agile methodologies to allow for flexibility and iterative progress without compromising quality. This approach ensures that your program stays on track despite unexpected changes.

Ensuring everything stays on track despite the scope changes is quite a challenge. As a PM, if you start seeing scope changes creep in, start documenting them. This will help create a transparent view of the daily changes. Next, identify the areas which are affected due to the scope creep, and start putting backups in place, usually its schedule or resource. If it’s resource, you can allocate the right individuals or onboard other skilled individuals. If it’s schedule, start with informing the stakeholders and prioritizing the roadmap. The truth is you can’t always keep everything on track with added scope but it’s easier to manage if you are in the know and can bring the right people in.

Ensure scope changes avoid threatening the program timelines by maintaining communication plan, task prioritization as per program objectives, and implement agile methodologies for planned projects that meet the program GOALS. First, encourage frequent check-ins via meeting in person or over the phone to evaluate the program progress, any modifications on the scope, and its potential effects on the program's timelines. Effectively prioritize tasks as per critical program objectives using Eisenhower matrix to maintain timelines based on its expectations, urgency, and maximize value so that everyone agrees with the program goals. Genuinely encourage to use agile methodologies process using iterative approach that foster visibility of tasks.

When scope changes impact your program timelines, promptly conduct analysis collaboratively with stakeholders to understand the effects and facilitate adjustments. Prioritize changes that align with strategic goals, and update your project plan, reallocating resources and adjusting timelines as necessary. Clearly communicate these updates to all parties involved and monitor the project's progress to make further adjustments if needed. Proactive management, flexibility, and clear communication are key to keeping the project on track amidst scope changes.