To duplicate your QR Code, here's what you need to do:
Login to your Scanova account
Go to Saved QR Codes
Under the Actions tab, adjacent to your QR Code, click on Duplicate QR Code button
You can re-name your QR Code by clicking on the edit button adjacent to your duplicated QR Code name
Note that the duplicated QR Code is simply a copy of your original QR Code and editing the content of the duplicated QR Code will also edit the content of the original QR Code and vice-versa.