Display files in adjacent window

I would like to configure DO to have three windows open

  1. Directory tree
  2. Subdirectories
  3. Files in the subdirectories

When I navigate through a folder like my local dropbox install I want to see the three panes. I have looked and looked and can't find how to do that.
Please I really like the software, especially the flat view, but need this to be my go to explorer.