one account private separate users
My wife and I share the same account under my name. She has her own email address but all information is shared between all devices, two phones, one iPad and a Mac desktop. I would like to have each account separate and private except when I want to share data like pics and some emails. How do I prevent all data from automatically shared with all devices?
iMac (21.5-inch, Late 2013), OS X Mavericks (10.9)