To turn off OtterPilot's automatic participation in Zoom, Google Meet, and Microsoft Teams meetings for real-time transcription, log in to Otter.ai, visit Account Settings > Meetings, and turn off "Auto-join all meetings" in the OtterPilot section. Confirm upcoming meeting changes, then verify on the calendar that OtterPilot is off. You can manually enable it for specific meetings or add ad-hoc for transcription as needed.