- All registrants with the same email address will be given the username of the registrant who signed up most recently.
- Password reset emails will only be sent for the username of the most recently registered participant
- The participant should register for the event with Username A and the Email address A
- The participant should not use autofill. He or she should register for the event again, but should use Username B and Email address B
Note: some email providers ignore a period in the email address. For example, if you have email address FirstnameLastname@gmail.com, you could register FirstnameLastname@gmail.com as registrant A, and then Firstname.Lastname@gmail.com for registrant B. Again, you will not want to merge these records. To Gmail, these are the same exact email address, but Sphere considers them unique.