As long as MS Word 2013 or higher is installed, any field that is available in a PowerPro RTO template can be used to generate a QR code

Certificates have a specific field named "QR_CODE" containing the Certificate information (Course, Student, date and RTO name)
Please read this document for a example on how to insert a QR Code containing the certificate information

A certificate template with certificate information QR_CODE can be downloaded from here