This still depends on the show policy set by the show manager
Account Changes for: Horse, Rider, and Trainer info
Take note this will only change on your account for future entries and not for previously entered horses, riders, trainers etc. Reach out to info@ringradar.com or the show manager to have these changed.
Go to My Account from the homepage
Select Horse or People
Use the pencil icon to edit their information
This is where you can view all the riders and horses attached to your account.