ProctorU has instructions for Catalina users on how to enable screen-sharing through their browsers when using ProctorU:

https://support.proctoru.com/hc/en-us/articles/360036574592-MacOS-X-Catalina-Users-Important-Notice

If students experience this issue when attempting an exam in ProctorU and need immediate assistance, they should contact ProctorU support through either of these channels:

  • www.ProctorU.com- blue live chat button on the bottom right-hand side of the screen.
  • 855-772-8678- connect directly over the phone