How-to
To add a product to an invoice, follow these steps:
Make sure the order is a completed order.
Check the boxes for the products you want to add to an invoice.
A bar will appear at the bottom of the screen. Click the “Add to Invoice” button within this bar.
You will then have the option to either “Create a new invoice” or select an existing desired invoice.
NOTE: Startup and Business users have the “invoicing+” feature on their account. You can check this article for more information.