There is no application of law that applies.
No
Not without your permission and the permission of the court that assigned custody.
No , not usually.Don't do it without permission or you may get your Dad in trouble.
Not without the permission of the court.
no
If your father have visitation right or share custody she will need his permission.
no, even if you have sole custody
If they do not have custody of the children, they cannot. If they have custody, they can apply to a court for a name change.
Not without his fathers and the courts permission.
Permission from the other parent. Yes if you are in leagule custody of the child at the time
yes he can.
Yes.