In the example below the "Inbox" (filing) screen is displayed, the scanned document was selected (highlighted) on the left and the PDF image is seen at the right.  Selecting a different document on the left will change the image on the right.  Selecting more then one document will automatically append the selected documents when filing.  Fill out the appropriate text in each "Index field" for the document displaying in the viewer and press the "FILE" button.  Once a document has been filed it can be retrieve using the "Search" option