You can set a list-specific QR code, just enter the URL you want to send people to on the left where it says 'Tracking URL' after opening any mailing list:
![](https://usw2.frontkb-cdn.com/attachments/5808844/82177/d0dfd37b-d023-4a90-9355-08cfe3ec7771.png)
Adding a QR to the Tracking URL will supersede ANY other QR code.
The pecking order is:
Mailing List > Message Template > Zapier/API