The Invoices option allows you to view your entire Invoice history, allowing you to view and download PDF versions of your Invoices in case you misplace any of them.
Invoices are automatically generated for you when your renewals are due (30 days before your renewal), and we try to keep the number of invoices to a minimum to include muliple items on a single invoice that share a renewal date. This is also where your converted Custom Work Quotes appear when they have been checked out to generate an invoice.