It depends on if you are talking about the Webex Meetings portion or the Webex App Portion. Here are the article for both Webex Meetings - https://help.webex.com/en-us/article/nblo8zfb/Manage-Software-Channel-Upgrades-for-Your-Webex-Site#id_84089 Web...

Webex Allows me to join meetings from wherever I am during the day