To grant access to the Screen Recorder on MacOS, click on the 'D' icon in the MacOS menu bar.
Click on the grant access button for camera and your system preferences, window will open. Locate and click on the checkbox next to Descript. Then click later when the dialogue prompts you to Quit and Reopen.
Click the sidebar item for microphone and check the box next to Descript again, Then click later.
Scroll down to the sidebar item for screen recording and click on the Descript icon again. You may need to click the lock icon in the lower left corner top authenticate with your MacOS password. Once unlocked, click the final check box next to Descript and select quit and reopen.
Close the security and privacy menu. Then click again on the D logo To access the screen recorder menu.