Group Google Nest speakers to listen to Tunein

Good afternoon,

I have a question about the Nest Speakers. I have several speakers in my living room but I cannot seem to group them and let them cast internet radio from Tunein as a group. So I would like to have a flow for the mornings to turn my lights on, turn my alarm system off and play a Tunein radio show to my 3 Nest speakers in the living room at the same time. I have created a group in the Google Home app but this doesnt work, also the Homey app doesnt work. Hope you can help