(1) Unless subsection (2) applies, a child maintenance order in relation to a child may be applied for by:
(a) either or both of the child's parents; or
(b) the child; or
(ba) a grandparent of the child; or
(c) any other person concerned with the care, welfare or development of the child.
(2) A child maintenance order in relation to a child who is under the guardianship, or in the care (however described), of a person under a child welfare law may only be applied for by:
(a) the child; or
(b) a parent of the child who has the daily care of the child; or
(c) a relative of the child who has the daily care of the child; or
(d) a child welfare officer of the relevant State or Territory.