I'm so pleased with Odoo at this point, I've managed to get my website online and products showing, I'm in the process of creating recurring proforma invoices.

The question I have is related to the customer portal, they can see their account "paid/unpaid" invoices. Is there a way to show their pro-forma invoices too? With the ability to pay these through the portal? Which would then convert said pro-forma into an invoice and issue receipt. Is this possible in any way with CE? Many thanks for any info