To my surprise, I found the following https://help.webex.com/en-us/xcwws1/What-s-New-for-the-Latest-Channel-of-Webex-Meetings with version 41.9 Webex is introducing Collaboration Restrictions for Company Users Joining External Meetings
Site administrators, you can now restrict your company users to use certain in-meeting features, that go against your company policies when joining meetings outside of your organization. These features are made read only or blocked for your users:
File transfer
Screen share
Annotation
Chat
Q&A and Polling
You can add your own approved site list to exclude these restrictions. We’ve provided you with a simple toggle in Control Hub to control these features for all users in your organization.
| This setting is only applicable to users using your company's claimed domain email address to join meetings. |
Along with this functionality, site administrators can also control in-meeting experience for any user (including guests) who are using your company laptop (Windows and Mac) and mobile device (iOS and Android) to join external Webex meetings.
As a site administrator, you can configure your laptops and mobile devices using registry keys in a way that restricts any user joining meetings using this laptop to adhere to the collaboration restrictions. Simply use registry keys to mass configure and manage your company laptops and mobile devices and use your company's Org ID as a token in the registry key. There’s appropriate indication in the meetings to let users know that they are restrictions to use certain features due to their company enforced policy restrictions.
