Hi nathanelcoate, 

Thanks for checking the status of the feature request where you can enable BAS e-lodgement with branch number on their ABN. QuickBooks Online is constantly changing and evolving based largely on the suggestions and requests of users like yourself. While the said feature is not an option, we want you to get in the loop about the product updates in QuickBooks Online. You can check it here: https://quickbooks.intuit.com/au/product-updates/.