Google Nest Community

I used to be able set the "Default music speaker" as a an audio "group", ie. all my speakers on the main floor. I can only seemingly select an individual devices as the default speaker now. Was there a change that I'm unaware of?

I have dived head first into the google ecosystem, including subscribing to the nest aware - but there have been some frustrations with the experience.I have a nest cam IQ to monitor my baby in her room, and a google home speaker playing white noise ...