Unable to join more than one Webex Training session on my Mac.
Can I join a second session from my Mac if I already have one running?
How many Webex Events session can I join at one time on a Mac?
A Mac user can join only one Webex Training or Webex Events at a time. This does not apply to the Webex Meetings service, a Mac user can join more than one Webex Meetings at the same time.
For known issues and limitation, see: Known Issues and Limitations for the Webex Meetings Desktop Application