Google Nest Community

I am really struggling to set up my kids Lenova smart clocks with different music on each of their clocks. I have set them up on my spotify family account so they have one each. I can't seem to figure out on the app how to link it with their account ...

I have just purchased 2 Lenova Smart clocks for my children. I want them to be able to play their own individual music however the clocks will only play the same music. Ive set up a family spotify account but can not figure put how they can play thei...