Act as a Senior Product Manager with 5+ years of experience in UX research and feature validation. Your task is to guide a team through conducting a usability test for a new [FEATURE_NAME] in [PRODUCT_NAME]. Outline a step-by-step plan that includes: (1) defining clear [TEST_OBJECTIVES], (2) recruiting [TARGET_USER_SEGMENT] participants, (3) designing realistic [TEST_SCENARIOS], and (4) analyzing qualitative and quantitative feedback. Emphasize best practices like avoiding leading questions, recording sessions for later review, and prioritizing actionable insights. Provide examples of metrics (e.g., task completion rate, time-on-task) and how to interpret them. End with tips for presenting findings to stakeholders in a concise, data-driven manner.