Proposal Summary
This proposal covers the scope of adding Payment Link to Invoice in Second Source Rx website.
Requirement
Requirement is to Enable the Feature ‘Payment Link’ to Invoice. So, a customer can make payment from the invoice.
Our Solution
Enable the ‘PAYMENT LINK’ feature
Go to Setup->Enable feature
Transactions ->Payment Processing

We will get a ‘Payment Link’ tab in Commerce tab.
After enabled the feature, we can configure Payment Link to select certain payment methods, allow partial payments, and include a company logo and information. We can also customize the email templates that are used to inform customers when payment is accepted or rejected.

Then we need to customize Email template Standard Payment Link Payment Confirmation and Standard Payment Link Payment Declined Notification or we can use the default template.
We can customize the look of the invoice, decide if the invoice is included as a PDF attachment, and use an email template for quick set up.