@amvda Pag na invite kayu sa visa might as well include them both as your dependents sa application. Read further here kasi madami conditions bago ma prove na entirely dependent sila sayu.
https://www.border.gov.au/Trav/Visa/Incl
Other family members
A family member can be your parent, brother, sister, grandparent, grandchild, aunt, uncle, niece, nephew or step equivalent.
For any family member that you include in your visa application, you must provide evidence of their:
relationship to you
dependency on you
relationship status (whether they are married, in a de facto relationship, divorced or separated).
This evidence includes:
a certified copy of their birth certificate and proof of their relationship to you
documents showing that the relative lives in your household
documents showing that your relative has been dependent on you for at least the 12 months immediately before you lodge your application.
Your family member will be considered dependent if all of the following apply:
they do not have a spouse or de facto partner
they usually live with you
they are wholly or substantially reliant on your financial support for their basic living needs (food, shelter and clothing)
they are more reliant on you for support than on any other person or source
they have relied on you for at least the 12 months immediately before you lodge your application.
If your family member is divorced, legally separated or widowed, you must provide certified copies of supporting evidence, such as:
the document of legal divorce
the document of legal separation
the death certificate of the deceased partner.