Thank you for your question.
Please expand on your question.. do you wish to know how Autioneer's Scheme works?
Thank you for further information.
HMRC VAT Office have VAT Notice 718/2 - the VAT auctioneer's scheme and link to it is provided here.
Examples are shown in Sec 8..
I hope this is helpful and answers your question.
If you have any other questions, please ask mebefore you rate my service – I’ll be happy to respond.