An invoice is a statement containing a list of services or goods provided. It establishes an obligation on the part of the purchaser to pay.
To create a new invoice from a quote, open the quote from the quotes module.
Click Action -> Convert to Invoice.
You will be brought to the conversion page in which you will need to name the invoice and select a status and an order type(one time or recurring).
Enter any additional information and click Save. The quote will now be an invoice.
To create a PDF of this invoice that can be provided to customers, click PDF at the top right corner.