You've found out your Attendee made a typo while going through registration and either their email address or name (or maybe both) are incorrect. No problem, follow these steps to fix it.
- Head to Activity & Reporting > Attendees.
- Use the search bar to find the Attendee you're looking for.
- Click on the three dots (...) next to the Attendee record and then Edit Record.
- Update the email address and/or the name and press Save. Their details will now have been updated.