Hello @Garvan Long ,
Companion Mode is not currently supported on Webex DesPro, the only supported devices are as follows:
ROOM DEVICES
Cisco Webex Room Kit
Cisco Webex Room Kit Mini
Cisco Webex Room Kit Plus
Cisco Webex Room Kit Pro
Cisco Webex Room 55 and Room 55 Dual
Cisco Webex Room 70 and Room 70 Dual
WEBEX BOARDS (TOGETHER WITH ONE OF THE ABOVE)
Cisco Webex Board 55 and 55S
Cisco Webex Board 70 and 70S
Cisco Webex Board 85S
At the top of the article, you will see the Devices card which will contain the supported devices for this feature.
Reference:
https://help.webex.com/en-us/article/ogrc5/Set-Up-Companion-Mode
Cheers,
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