How to set up a second shared Apple ID for the App Store

It’s a common problem of the modern age: how to share just enough with a partner or with your family, but not your personal stuff, like emails and messages. An Apple ID is designed to be a unique identifier you can use across all Apple services and purchases, but Apple recognized that for legacy and other reasons, it had to separate iCloud-connected stuff, iMessage and FaceTime, and iTunes Store and various App Stores purchases.If you simply share the same Apple ID among everyone, as one