You can chat with other attendees or presenters during a meeting, such as when a presenter suggests a break-out session to discuss a specific issue.
Note: You cannot chat if the presenter has disabled or blocked chat.
To chat with an attendee or presenter
In the Attendees pane, right-click the name of the attendee or presenter with whom you want to chat, and then select Chat.
Type your comment or question in the text box, and then click Send. The chat between you and the attendee appears in the box at the top.