Candidates can effectively manage their time during the UPSC exam by practicing time allocation through regular mock tests. Creating a realistic timetable during preparation allows candidates to balance multiple subjects efficiently. During the exam, prioritizing questions based on difficulty level is crucial; candidates should begin with questions they can answer confidently. Employing effective techniques like eliminating obviously wrong choices can save valuable time. Additionally, maintaining a calm and focused mindset helps in avoiding the rush and ensures better time management, allowing candidates to maximize their scores across papers.