(1) On the written application of a parent, the Youth Welfare Office becomes the legal adviser of the child for the following tasks:
1. the determination of paternity,
2. the assertion of maintenance claims and the disposition of these claims; if the child is in the foster care of a third party on a payment basis, the legal adviser is entitled to satisfy the third party from the payment made by the person liable for maintenance.
(2) The application may be restricted to individual tasks of those designated in subsection (1).