My Accountant cannot assist with the setup on QBO

I want to record the following on a Buyers Sales Receipt/Invoice 

Auction Item Sales - Funds to go to Clients Bank Account

Commission - Funds to go to General Bank Account

VAT on Commission - Funds to go to General Bank Account

I need to record the following on a Sellers Payout (Supplier Bill)

Auction Item Sales - Funds from Clients Bank Account

Sellers also pay Commission + VAT (on Commission) so I can do a Customer Invoice for the Commission but I need to receive the payment inclusive of VAT from the Clients Bank Account

Reporting Wise 

Auction Item Sales should net off

Buyers pay and this money should is is paid to the sellers, sellers commission & VAT on sellers commission

I have an auction system so just need to record the money in and out on Quickbooks but do need to know a figure for Auction Sales if possible

Any help is appreciated