STAGE 1: Frame the project
Concept: Separate success criteria from the proposed solution.
Task: Write the problem, users, measurable acceptance criteria and exclusions for the booking service.
Acceptance: Include a sponsor decision and an end-user acceptance check.

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STAGE 2: Plan the baseline
Concept: Estimate work before promising a date.
Task: Break work into six to ten packages, assign effort and dependencies, and reconcile the cost plan to the 6000-unit limit.
Acceptance: Every estimate states its assumption; resource effort is not confused with elapsed time.

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STAGE 3: Control a change
Concept: A request is not an approved baseline.
Task: Assess a late request for SMS reminders against cost, scope, risk and schedule. Present at least two options.
Acceptance: The recommendation identifies who can approve the trade-off.

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STAGE 4: Accept and close
Concept: Completion requires evidence and transferred ownership.
Task: Build an acceptance record, outstanding-items list and lessons note for the library manager.
Acceptance: Separate accepted work from work postponed to a later release.

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