Clicking on the “Invoice Settings” icon will bring you to a page where you can enter your invoice settings. You can opt to either have the invoice sent or not sent by checking or unchecking the “send invoice via email” box. You can also input an invoice prefix, custom invoice subject, ‘from’ address, and blind carbon copy address so that you can also have a copy of the invoice emailed to you for your records. Additionally, you may also input custom HTML invoice headers and footers. After entering your settings, click “Save” to make sure all of your settings have been saved and then click the “Back” button to return to the main “Billing Settings” page.