Bit fiddly but I’m getting there. If I leave my old id on my sons account then I know what he’s downloading so thats fine. I’ve created a new account on my iphone which is also working fine, I then need to create a new account on my wifes iphone using her email address.
I’ve left home sharing on my original id between the three computers and my iphone and that’s working too.
If I use one pc as the ‘master’ then it should all work.
Its not perfect but its a workable solution.
This has the added benefit that we can now all use imessage which we couldn’t before.
You would think there would be a way to have sub accounts from a master itunes account.