Make sure you have a Form
with Form Configuration
and a TPC Form Layout
Drag and drop the QR Code
widget from the Portal Connector tools into the body of your form and click edit
to display the properties prompt.
dropdown list allows you to select an attribute for the widget. This would provide the data to produce the QR barcode.
The Encoding Type
allows you to specify a barcode symbology for the QR barcode to adhere to. You can read more about QR barcode symbology here