For any file you show that contains multiple slides or pages, such as a slide deck that you upload to a meeting, you can show thumbnail text of each slide or page within the file. When you view thumbnails, the view does not change in the content presentation area of participants' consoles.
This feature is helpful for viewing the component parts of a file for your own information while showing the file to others at the meeting.
You can give attendees permissions for viewing thumbnails. For more information, see Managing Meetings and Attendees.
To show thumbnails for a file
In the Content pane, click the file name whose thumbnails you want to show.