hi please help, i am going to apply my fiance as a subsequent entrant to my visa subclass 489, what are the requirements? do i need proof of funds?

Hi :) My partner who is English who is currently working in Malaysia is applying for the "Prospective Marriage Visa". One of the criteria is to show proof that we are getting married. Whilst we understand that we will have to get married within 9 months regardless of whether in Oz or out of OZ...