Sharing "desktop and documents missing
I have a MacBook Air laptop. I bought a iMac. Now all I want to do is have all documents work on both com[puters and share them with each other.
On the iMac, under system preferences/iCloud Drive/options I can see "desktop and documents"
but on the Mac Air its not an option. So I can't share...
HELP
MacBook Air 11″, OS X 10.10