How do I participate in a derby? There are two ways in which you can participate in a derby: If you are invited to a derby and successfully accept that invitation, or If you create a derby and at least one other invitee joins you in your derby. Related articles What is a Walkie Talkie? I was invited to a derby, why can't I join? What is a Step Derby vs. a Points Derby? Can I delete a derby? How many people can be in a derby?