Account of Gold

You make the account with gold the other person home with the Xbox with no gold on it

Account with gold add it to xbox without a gold account make gold account home on that xbox pretty much it they get games and gold on both accounts afterwards

a Trial Gold account is still a Gold account. So a Trial gold account will be able to do anything a normal Gold account account can, including the Battlefield 4 Beta.

As long as the account that has gold selects that console as the home console all other accounts will have gold. If your gold account is on a console that is not the home console, then your gold account will need to be signed in so the other accounts can
use your gold.

It's essentially the same, let me try to explain.

You need 1 gold account for every 2 consoles.

Let's say you have 4 consoles. With 4 accounts. You make 2 gold accounts, and 2 home gold consoles with those accounts. The gold accounts play on the non gold consoles and they get their benefits because they are gold members. The 2 non gold accounts play
on the home gold consoles and get the benefits because it's a gold console.

What Gold features are you trying to use with the account?

Be aware, that only Multiplayer and Party chat will work. You will NOT be able to get the Gold discounts or free Games with Gold on the non-Gold account, even if the console shares the Gold of the gold-owning account.