Note: If you have already completed these steps while on Catalina and then upgraded to Big Sur, you should not have to adjust these settings a second time. If you are running macOS Catalina - version 10.15 or later - or, any version of Big Sur, you must grant Google Chrome or Firefox access to the new screen recording permission in order to share your screen for a proctored session with ProctorU. Apple introduced new security features with the release of OS Catalina and these also apply to Big Sur.