Which approach can a project manager use for developing a calendarized budget to reflect timing of expenditures?

Top-down budgeting starts with a high-level budget figure set by management and allocates portions to various departments or activities. While it provides a quick overview, this approach often lacks the detail necessary to accurately reflect the timing of individual expenditures, which can lead to misalignment with project timelines.

The three-point estimation technique involves calculating the expected costs based on optimistic, pessimistic, and most likely scenarios. While useful for risk assessment and uncertainty management, it does not inherently provide a calendarized budget and does not focus on the timing of expenditures in the way that bottom-up budgeting does.

Expert judgment relies on insights from experienced individuals to estimate costs and budgets. Although valuable in the budgeting process, this approach lacks the structured detail of bottom-up budgeting and does not specifically address the need for a calendarized budget that aligns expenditures with project timelines.