Step 1:
Open the PoS (Point of Sale) app. You can do this in the Business Apps under Point of Sale or click Open in the tile under Point of Sale.
From there, select the Connect tab.
Now check under Connect whether the application QR is activated (toggle switch is blue).
Step 2:
Click on Add.
Now, click on Install on the QR Banner.
Please click on Done - the QR Code shown is not the QR Code you need for use at the PoS.
Now, click on Close in the top right corner.
Check if the QR app is still active, i.e. if the toggle switch is blue. If the toggle switch is still grey, click it to activate the QR application.
How to download / print the QR code and use it for PoS can be found here.