Hello PJD007,
Welcome to the Community page,
In QuickBooks you cannot make direct payments out of QuickBooks account. No Payments come in or out of Quickbooks, so you just need to add the bank details on an invoice in the template section (main cog wheel> custom form styles> select the invoice template> content>bottom box on right hand side> in the add payment details and footer- enter your bank details in there> done). Then the customer when they receive the invoice they will then be able to bank transfer the money to you and when they get the invoice and making a payment get them to add the invoice number so you know which one is being paid.