Sha123

Hi guys, I am filling up the online application form to apply for Australian citizenship. At the end of the application form, I have to upload relevant documents. Here I am seeing multiple sections such as "Document including photograph and signature", "Address - Residential, Evidence of" etc. with each section providing a "Chose files" button to select and upload file. However, I also see 2 sections here which has my parents' name as title but no "Chose files" button - has anyone else encountered this? What does this mean? Makes me almost think that there is an error with the application form...what are your thoughts? Thanks in advance for your help.