this new video Mike demonstrates how to use the new presenter view in Microsoft Teams Meetings. As you'll see in the video, the new presenter view is similar to the presenter view you're probably used to seeing in PowerPoint. The difference is that in Microsoft Teams Meetings presenter view you can see participants' chat messages while also viewing your notes, slides, or video. Watch Mike's video for a full overview of the new presenter view in Microsoft Teams Meetings.
It should be noted that the new presenter view may not be available to all users right now. To access it you will need to have enabled the "Teams Public Preview" which Mike explains here.