@johnadrielle_santos @grace143 hello hope I can help with regards sa dependents they should comply with all the factors to qualify:
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.
https://www.border.gov.au/Trav/Visa/Incl
@kittykate points of balance test:
The balance-of-family test measures your ties to Australia. You meet this requirement if either:
at least half of your children live permanently in Australia
more of your children live permanently in Australia than in any other country.
You can check the table here https://www.border.gov.au/Trav/Visa-1/103-
Example if your parents have 2 children, for them to qualify, at least 1 child should be a permanent resident or citizen of AU