This kind of visa only applies to people who live outside Australia, but have next of kin living in Australia, can stay in Australia as a permanent resident.
Remaining Relative Visa (Subclass 835)
Child Visa (Subclass 101, 802)
Orphan Relative Visa (Subclass 117, 837)
This permanent visa lets people stay in Australia to be with their only close family members
This visa lets a child outside Australia move to Australia to live with their parents
This visa lets a child who is single come to Australia to live with a relative if their parents are dead, are unable to care for them or can't be found