+ I already registered as an Individual, but now want to Join a Team.
You can certainly join and/or Create a Team after you already registered as an Individual.
To do this, start by logging into your Eventbrite account, click on My Tickets, chose "Join A Team”, and follow the prompts from there. Here is a more detailed step-by-step guide to help you through the process as well: https://www.eventbrite.com/support/articles/en_US/How_To/how-to-join-or-create-a-group-after-registering-individually?lg=en_US
**Note the 10% team of 15 discount pricing is not retro-active for existing registrations