I want to be allow Reader users "Document Assembley" permission in a PDF saved as Reader Extended - PDF / Enable additional features. When I do that the properties of the file change the Document Assembley option from allowed to Not Allowed automatically. Can anyone advise how I can do what I want to do with this sort of distributed file?
"Document assembly" (DA) refers to the ability to add/remove/rotate pages in a PDF file, or change the bookmarks tree. None of these is ever possible in Reader, so the DA flag is always disabled.
The process of Reader-extending a file involves a signing process which in turn means that some editing features which are normally possible in Acrobat have to be disabled, and DA is one of them.