1. Turn on the tv
  2. On your laptop, join the meeting
  3. On the Meeting tab, locate and tap the Zoom Room pairing icon , found in the top-left corner of the screen.
  4. Enter the Sharing Key, displayed on the Zoom Room display, and tap Pair.
    When successful, the name of the Zoom Room you are paired with will appear above the search bar on the mobile app. 
  5. When you start or join a scheduled meeting, you will be prompted to choose to Join from Room or Join from My Phone.
  6. Select Join from Room to have the paired Zoom Room join the meeting.
    Your mobile device will also remain connected to the meeting, but will have video and audio off. 
  7. From the mobile app you will have the following controls:
    • Leave: Tap the Leaveoption to leave the meeting either:
      • Leave from Room: Disconnect the Zoom Room and your paired mobile device from the meeting. The mobile app will also unpair from the Zoom Room. 
      • Leave from My Phone: Disconnect and unpair your mobile device from the meeting and Zoom Room. The Zoom Room will remain connected to the meeting. 

how to:

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0065988