Monthly statements per brand, line by line: hours, hourly fees, commission on LIVE GMV, and the adjustment once the LIVEs have run.

Product screenshot with sample data
Approved bookings billed up front at each host's rate for that brand.
Commission added on matched GMV; LIVEs that didn't happen are credited automatically.
CSV per brand per month, ready for Xero, QuickBooks or a spreadsheet.
Branded PDF invoices sent from WhizzStreamer.