I was trying to add a code for prepaid gold membership to my kids Xbox yesterday and couldn't work out what info they wanted so I ended up leaving it.
I decided to try again today and it seems that I created an account for myself! I've logged in and added the code, but I can't work out if our accounts are linked or not?
Ideally I'd like to be able to add their accounts to mine so they have their own gamertags but I control purchases or membership subscriptions. Is this even possible? I don't really like the idea of registering payment details to their account as it leaves me open to huge bills!