If a participant sends you a message when the meeting room is not visible, or while you are sharing your screen, a notification appears in the lower-right corner of the screen to let you know you have a new message. You can see the sender’s name and the first few words of the message in the notification window. (The notification disappears after a few seconds, or you can close it.)

By default, Chat notifications are enabled. As the host or presenter, you can disable these notifications if you don’t want them to appear to other attendees while you are sharing your desktop.