In my household, I've had a pretty good setup for the 4 of us across all of our iPhones, iPads, and Macs. My account is used on each users device for apps and music. Then we each have our own iCloud acct for iMessage, iCloud, and Game Center (I had set up game center with a non-icloud address). The attached table shows the setup. So, to convert to the Family Sharing, I'd assume that I make the DAD@yahoo.com address the "family organizer". And then from my iPhone and Mac, invite the other 3 family members, and then we are on our way. My concern though is all of the apps and the setup on their iPhones for the App Store. Do I change everyone elses App Store account from DAD@yahoo.com to each of their own firstname.lastname@example.org accounts? Will it screw up all of the previous app purchases that were made by the DAD@yahoo.com account? I really don't want to hose anything up, but anyone else who has made a similar conversion, any tip would be appreciated. Thanks!