Very simple: left-click on the Outlook attachment that you want to transfer directly to PaperOffice. Hold the mouse button down and drag the attachment directly into the PaperOffice interface.

If your PIA mode was set to "ON", then decide in which folder the attachment should be saved and complete the action by clicking "Save".

If your PIA storage is set to "Manual storage", you only have to drag the attachment into the surface - PaperOffice automatically places the attachment in the currently selected folder.