Click the ^ button next to the Mute/Unmute button to open Audio options. In this menu, you can set your Microphone and Speakers, or open additional Audio Settings.
Click Test Speaker & Microphone to start a test of your sound devices. A prompt will appear to guide you through selecting and testing all detected speakers and microphones. Click through the prompts to ensure your selected audio devices are working, or to discover which detected settings will work for your meeting.
Click the ^ button next to the Stop/Start Video button to open Camera options. In this menu, you can set your Camera, toggle blur or backgrounds, and open additional Video Settings