Hi, now a days technologies growing and people like to use them as much as possible. One of them is QR scan and pay. Is there a way that QR code could be generated and or integrated with the invoice generated by Manager. Thank you.
You can always use an img link in a custom field if you need a static qr code.
But if you need a dynamic qr code you should use a custom theme and a qr code api service like goqr.me. But you need to have a decent set of IT skills to manage that.