If you are using Slack (paid version only):.If you're using Safari, go to Google Hangouts and start a new Video Call.If you're using Mozilla Firefox or Google Chrome, the fastest way to do this is by visiting screenapp.io (no affiliation, it just works well).If you're using QuickTime Player, open the File menu and choose New Movie Recording.In order to get an app to show up in this list, you first need to launch the app and activate some functionality inside the app that uses the Camera and Microphone. You can't even drag an app into this list. None of your installed applications are shown in the list, and there is no + button that you could use to add an app. However, it doesn't work quite how you would expect! By default the list is empty, as shown below. You can manage permissions for Camera and Microphone in the System Preferences. This affects all kind of calling software, and also affects web browsers that you might use for joining online meetings. Starting with macOS Mojave, Apple has added new permissions to macOS that need to be granted before an application can use the Camera or Microphone.
