Webex allows users to be on two different meetings concurrently. This includes not just the Web meeting, but also audio. This can be dangerous, as one could join two meetings, and say the wrong thing in the wrong meeting!
It will be great to provide the ability for users to put a meeting "on hold", join another meeting, and then be able to "resume" to return to the first meeting.
User's status within the participant list to reflect the hold status.
This will eliminate the risk stated above.