How do I turn on iCloud Music Library in iTunes 12.1.2?
I do not have the option described here: Check your Apple Music library settings - Apple Support
Mac: From the menu bar at the top of your computer screen, choose iTunes > Preferences and turn on iCloud Music Library.
This is all I see:
MacBook Pro (15-inch 2.4/2.2 GHz), OS X Yosemite (10.10.4)