Guys, I'm directed to immi website for additional documents. What do i need to attach for family register and composition?

Thanks for your reply. For this particular category Document type is "Family Book/Household Booklet/Family Composition Evidence". Further info when I click "?" is "You can provide a copy of your family register book (if your country issues one)." Really confused. There's a link for Form 54 but that form is only required for applicants applying from China.

You can list how each applicant is related to you/each other to show that you’ll be travelling together as a family. This info is provided in Form 1554 which also to be attached together with this application.

It's ok. Thanks for your help anyway. I'm thinking of not attaching anything as although it states required but there's also (if applicable) for this item. Just that I'll feel more at ease if I have at least 1 attachment in each item.