First, take a look at the official page for preparing your electronic theses and dissertations.
There are tabs with information about formatting, as well as Microsoft Word and LaTeX templates to assist you in ensuring that your document conforms to the AU formatting guidelines.
The AU Electronic Thesis and Dissertation Submission Style Guide is linked from the FAQ page there.
Questions about the ETD submission process should be directed to the ETD administrators in the schools and colleges. Their names and contact information are also on this page.
If you would like further assistance, please Ask-A-Librarian.