Auto-sorting Fences

i want to separate the "files & documents" fence out into multiple fences.  I set up a "pictures" fence, but i dont see a way to associate a file type with that, so all pictures go into that fence.  i know i can drag and drop, but  it auto-sorts when the program starts and i would like it to re-sort and organize existing items after i have setup new folders.  It obviously has the capability to do this already, i just want to know how to edit the file associations for the fences.

Also on that note, when i save something new (after fences is installed) to my desktop, it resides outside of any fences--is there a way to have it automatically move it to a specific fence based on file type or something?  i would like if my pictures, word documents, notes, videos, etc went directly to the fences i would have setup for them.