This is an example of the verbiage you can include in your revised course syllabus if you plan to use Proctorio as the proctoring solution for your exam(s):

In this class, exams will be administered online and will be proctored using an automated proctoring solution called Proctorio®. The university has purchased this service and it is available at no cost to students. Proctorio® gives you the flexibility to take the exam any time during the scheduled exam window without the need to schedule the proctoring service ahead of time. To use this service, you must use Google Chrome as your browser and install the Proctorio extension on your device. For assistance setting up Proctorio on your device and to access a list of the minimum technical requirements, click here. (Required) Please note that Proctorio is not supported by your phone or tablet device.