Webex does not know if I am sharing my screen via a different application. I want to be able to stop incoming message pop ups to ensure that when in meetings where another party controls the screen sharing tool choice, they don't see my IMs while I present.

In Webex Teams - when your presence status is "Presenting" we block push notifications from appearing on your screen.

Please explain "already exists" or demonstrate how to do this. It wouldn't of been a suggestion if it was known how-to-do this.