Syncing I Tunes library to two iphones
I have one itunes library on my (windows) computer. I can sync all of my music with my iphone but when I try and sync my wife's iphone I don't get the option to check items to sync. Instead I get a window saying "(name of phone) can access your icloud music library. Songs can be downloaded and played via wifi or cellular network" We have a family Apple Music subscription and although I can see all of the music we own including music in the library not purchased from apple on my iphone, on my wifes phone we can only see apple purchased music.
So my question is how do you sync the entire library two two iphones that have separate apple id's?
iPhone XR, iOS 12