There are a number of options for children, parents and other family members wanting to migrate to Australia to join their family permanently, namely:
1) Spouse and Fiancée Visa
2) Child Visa
3) Parent Visa
4) Other visas such as Remaining Relative, Aged Dependent Relative or Carer Visa
Other Australian visa types:
Australian Skilled Migration Visas
Australian Business Visas
Australian Employer-sponsored Visas
Australian Investor Retirement Visa
Australian Student Visas
Australian Family and Spouse Visa
Australian Resident Return Visa
Australian Working Holiday Visa
Australian Travel Visa