How can I cast a ringcentral meeting (video) to my TV?

I'd like to be able to see the meeting on our boardroom TV. The TV has chomecast built-in in case this helps. I am using the webcam to capture us on video, but the video of other participants only shows on my laptop. How can I use either the RingCentral Meetings app that I have on my macbook OR use RingCentral Meetings in my browser, which would then allow me to chomecast to my TV?