We have 5 IOS devices and 3 OS-X devices all using the same Apple ID. The my info constantly changes on these devices to different family members. I may send an iMessage and my wife's picture or my daughter's picture may show when I send a text message and vice versa. Is there a way to save these settings on each device or any way to keep this from constantly switching? I know it would probably best to set up an Apple ID for each user, but we prefer not to at this time. Or is there a way to share certain things, like photo's and contacts across multiple Apple ID's?