The birth mother's partner can acquire parental responsibility through a number of different methods, including a child arrangements order and a parental responsibility agreement. (hfclaw.com)
The new arrangements are built on a process of negotiating regional priorities with Indigenous representative bodies as well as negotiating shared responsibility agreements with local communities or groups. (humanrights.gov.au)
Step - parents can acquire parental responsibility by signing a parental responsibility agreement to which a natural parent (or both natural parents if they both have parental responsibility) consent. (newlawjournal.co.uk)