What documents are required for applying for a Resident Return Visa (RRV) subclass 155/157 for a Thai partner, and is a separate application needed for their child?

Hi everyone From Australia

Just question to those who have applied for Resident return visa (RRV) subclass 155/157 for their Thai partner

My wife’s RRV is about to expire in 2 weeks time and I contacted an Immigration agency and asked what documents would I require and they gave me a list of everything I needed as proof of tax, super, pics, passports, lease agreements etc to submit, I also asked a friend if they needed to submit the same when they applied and they said they weren’t required to submit any of that, they just submitted online and payed the fee and that was It and was granted an extra 5years

I’m confused, I just want to be prepared just in case I do need to submit extra documents once I payed also do I need to submit another application for her daughter who is 14y or it come under my wife’s application, I do realize I need to pay 2x

Thanks