Yes, you can include your family members in an Australian visa application, such as a student visa, skilled visa, or partner visa; however, this depends on the specific visa you are applying for. Working Holiday Visas or tourist visas require each family member to have a separate visa application, even if they are traveling together. It is necessary to declare your family members in your main application and refer to the official DHA (Department of Home Affairs) website to check for the eligibility requirements for your partners or dependent children for your subclass.