There is a Pega Academy course called OpenSpan Studio Core Training. This is essentially the same tests that you would have taken in training before Pega. At the end of the course, you are awarded a certificate of completion. You can complete this course again to re-inforce what you already have. There is also a Pega'd version of the course that shows integration with Pega 7 and some of the new features of Pega Robotics 8.0. I have not reviewed the course personally but it might also be relevant for your team. This course is called Pega Robotic Automation Architect Essentials (8.0).