Share an application
In meeting-type events, you can share the entire desktop directly from the Welcome page by clicking the Start AppShare button.

For Classroom events, you can share an application only if the session has started. Click the down arrow in the Share button and select an application you want to share.

Share the desktop
When selecting applications to share, you can choose to share the desktop. Sharing the desktop allows you to share your entire screen and all open applications instead of sharing individual applications.
To quickly share the entire desktop, click the Share button.