Generate a full detail guide on how to offboard a departing employee respectfully and effectively. The guide must be a process checklist for managers. It should include detailed sections on: 1. The Exit Interview: A list of constructive questions to ask to gather valuable feedback. 2. Knowledge Transfer: A plan for documenting the departing employee's roles and responsibilities. 3. The Final Day: A checklist of logistical tasks (e.g., equipment return) and communication. 4. How to maintain a positive relationship and turn ex-employees into alumni advocates. Please include a disclaimer about consulting HR.