Every time an organizer update the attendees on Webex app, new invitation email is automatically sent to all the attendees. Hope organizers can choose not to send the notification email, so as not to bother attendees with numerous update emails.
The function has already been supported in web browser as described in the help center, but still not in desktop Webex app. Hope that we can do the same thing in desktop app soon.
In the webex app scheduler, when you update a meeting where the invitees are updated, you are given choice to choose to send to all or not.