Ask for forgiveness not for permission. Do option #1. If you get in trouble, claim ignorance, and try for option #2. If that fails, try for option #3. Odds are

Ask for forgiveness not for permission. Do option #1. If you get in trouble, claim ignorance, and try for option #2. If that fails, try for option #3. Odds are they would never know or care even if it's against policy.