Share my xbox live account with my two brothers

Good afternoon. I would liketo know how can I share my xbox live account and games on xbox one with my two brothers. We are in three different countries, so, we have three different consoles. Thank you!

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Multiplayer games that dont require Gold account?

I cant do splitscreen Halo games(ranked obviously) or Campaign with a guest account. Neither on the Gears remastered game, my brothers share an xbox so Im trying to find games we can all 3 play together online at same time. If I buy my other brother a Live account it should work right? And also the Mic should work? I figured Id ask before getting another year of gold

 

Anyone know how this would work? (Live related)

Hey everyone, looking for some info regarding xbox live accounts.. seeing as I couldn't find anything helpful on the xbox support page, i thought I'd try here.
My situation:
I am currently living away from home (out of the country actually) and will be for the foreseeable future. Im thinking of purchasing a new X1 since i left mine at home with my bro.
My question is, would I be able to play with or at the same time as my brother using a single Live account? I know if one of us tries to sign into the same GT the other is logged in as, it will ask us if we want to sign out (only 1 GT at a time).
However, since a gold account is shared on the home xbox. What if my brother signs in with a different GT and I sign in with the original GT( through which Live was bought)?

Second question:
Can I download and sign into by Xbox Live GT if i'm in a different country?