All secondary applicants must hold an eligible visa. You meet this requirement if any one of the following applies to you:
you hold a Skilled – Independent Regional (Provisional) visa (Subclass 495)
you hold a Skilled – Designated Area – Sponsored (Provisional) visa (Subclass 496)
you hold a Skilled – Regional Sponsored (Provisional) visa (Subclass 487 or 475)
you hold a Bridging visa A or Bridging visa B because you have made a valid application for a Subclass 495 or Subclass 487 visa
you hold an eligible Student visa
according to my knowledge anyone of you couple can be 主申 in application of visa 887,and if it would be approved, both of you get visa 887 which means PR。