To help you deal with Code of Conduct and incidents that could happen during your event, we strongly invite you to read the Code of Conduct Handbook written by Ola Sendecka and Ola Sitarska. You can also watch Stress Testing Your Code of Conduct in Production, a talk made by Ola Sendecka and Baptiste Mispelon at DjangoCon US 2016.
You'll also need to send a report to the Django Code of Conduct Committee.