Since I no longer can scan directly into QB's, this is how I set up my work around.  The main folder is called Scanner.  Then I set up sub-folders which are named according to document type.  For instance, my first folder is called Purchase Orders.  I scan all handwritten PO's that I attach to the QB's computer generated Purchase order. Each scanned file is named the Purchase Order Number.  No sub-folders are needed.  My next File Folder is called Bills which I did set up sub-folders.  Each Sub-folder is named our Vendor name and the scanned file is named the Invoice number.  My next Folder is called International Customers with sub-folders.    I attached what it looks like for you. My scanned documents are all organized and easy to find so I can attach to QB's.