In your personal account, go to the "Gallery" tab.
Then click on the pencil icon next to the item you want to auction.
Next, select the "Auction" transaction type parameter and set the desired start and end time for the auction.
!The auction must end in at least a day from the given time.
Then save the new NFT parameters and the auction will start from the time the auction started.
Until the start of the auction NFT is frozen for sale.
!Attention: deals fee is 10% from deal amount.