Example: Horse is at $5000. User 1 enters $10,000. Which displays user 1 as the top bidder at $5,200. User 2 enters $10,001. This will display the $10,000 proxy bid entered by user 1 above user 1’s previous bid of $5200 and display the bid made by user 2 above both of user 2’s bids of $5200 and $10,000 which makes it looks like user 1 is bidding against themselves because of how it is displayed but it is impossible to bid against yourself. If you try to bid against yourself it will only raise your autobid. Some refer to it as a proxy bid or ceiling amount. Anything you enter above the minimum amount required to enter is considered an auto bid.