os sierra music upload to icloud
I am subscribed to apple music. I have an old mac with os Sierra, and Itunes with my own musiclibrary, which has always been synced with my ipad and iphone. For some time this sync does not work anymore (titles are depicted grey) and I understand that apple wants us to move music to the cloud. Then my devices can play my own music again, not by syncing anymore with the Mac, but via accessing icloud.
I am willing to migrate my musiclibrary of my Mac to icloud. However in Music Settings of my OS Sierra Mac the option “synchronization library” is not available.
so how can i migrate my OS Sierra musiclibrary to the Icloud?