A statutory declaration is simply a written document that you complete in front of an authorised witness, such as a Justice of the Peace (JP) or a lawyer.
Your statutory declaration needs to say that you have experienced family/domestic violence.
The two declarations from professionals need to state that they are satisfied that family/domestic violence has occurred. Immigration NZ has nominated specific professionals as the right people to make these declarations: these are social workers, doctors, nurses, psychologists, counsellors, and experienced Women’s Refuge or Shakti staff.