Reactions fill your video frame with a 3D effect expressing how you feel. To show a reaction, make the appropriate hand gesture in view of the camera and away from your face. Hold the gesture until you see the effect.
Turn on Reactions
Select Reaction in the Video menu - the menu appears when a video call is in progress
To show a reaction using a hand gesture, click the arrow next to Reactions in the menu
Click a reaction button in the submenu
While videoconferencing, you can express yourself with physical gestures such as a thumbs up.