Frequently Asked Question:
Enable for commenting and analysis in Adobe Reader
Is it possible in Quick PDF Library to set document property "Enable for commenting and analysis in Adobe Reader"?
No, it is not possible to enable this feature using Quick PDF Library or any other non-Adobe product.
This is a special feature that can only be enabled using Adobe Acrobat Pro or Adobe LiveCycle.
It is not part of the PDF specification. However, it's possible to include elements in a PDF that are not part of the official PDF specification. Anyone can include additional unofficial elements in a PDF that they create.
In this case Adobe insert a special security token into a PDF that has had this feature enabled by Acrobat Pro or LiveCycle and that security token activates the extended functionality in Adobe Reader.