Buyer’s premium is a required field for Timed+ auctions. Once the auction is created, this cannot be amended.
Provided the seller is not using the buyer’s premium on Auction Mobility in Auction Studio or on your front-end, you can edit the buyer’s premium values or add tiered buyer’s premium on LiveAuctioneers.
Note: Buyers Premium on LA is only shown on the catalog/lot pages for reference and is not used anywhere to calculate total hammer prices.