Thanks for reaching out. If you have a Chromecast with Google TV device, please check the steps listed below to see how you can choose your favorite channels:
Tip: To remove a channel from your favorites, navigate to the channel name and select it. The star will disappear, and the channel will be removed from your favorites.
I hope that helps.
Due to inactivity, I'll go ahead and lock this thread in 24 hours. Feel free to start a new thread if you need assistance with your Google speakers and we'd be glad to assist you further.