The first one is how to print all QR codes within your topic at once. You will see this at the top of the topics you will see Print QR codes (also in picture below) One thing to point out is that you may want to print out the QR codes so they come up a bit smaller. To do this simply go into your settings when you print and change how many pages you want per sheet.
The second way (which is new) is the ability to select individual responses and print them out. You can see this in Flipgrid's Tweet below as well as the embedded 1 minute video below.
🤩Are you ready?! 🎉— Flipgrid (@Flipgrid) January 15, 2020
The @themerrillsedu here, excited to announce a brand new way to bring #FlipgridAR and #StudentVoice to a whole new level! 🚀
You can now ✨Batch Action✨ ANY @Flipgrid response to a custom set of printable QR codes.🤳 pic.twitter.com/j6r4LcKtC4