Su autorización - Its okay
"Su hermana" means "his/her sister" in English.
"De su vida" in English means "of his/her life."
Su hyun
"Por su puesto" translates to "of course" in English.
Your boy.
"Su casa" means "your house."
Estoy a su bebe in English means I am a baby.
"Cree su contraseña" translates to "Create your password" in English.
'Su' means 'his/her/your', with no sense in the present case. Is it a name. If so, it means 'Su is gay/homosexual'.
Cuál es su nacionalidad = What is your nationality.
His/her/their passion is.
It depends on context. It can be his, her, your, their.