You can hide auctions (also known as unlisted auctions) by following these steps:
Login to the admin area
Create an auction
Navigate to the Auction List
Click the tick button under the Hidden column:
When the tick is Green, the auction is hidden
When an auction is hidden, it is removed from:
Auction Calendar
Previous Auctions / Auction History page
Please Note
Users can still access hidden / unlisted auctions using a direct link.