You may have two accounts on the same IP address. The accounts may never interact, and they may not vouch for each others. If one of the accounts get banned, the other one will as well.
I'm not sure about 'sharing one account', but I guess the best idea would be to make an account for your friend/family as well, if they wish to join.
what if you were banned would that mean your sibling would also be banned?
Lol? Yes you can. You're allowed to share accounts with ANYONE, if your "brother" gets you banned, sucks to be you.
You may have two accounts on the same IP address. The accounts may never interact, and they may not vouch for each others. If one of the accounts get banned, the other one will as well.
I'm not sure about 'sharing one account', but I guess the best idea would be to make an account for your friend/family as well, if they wish to join.

