Just trying this feature out, at first it didn't appear to work. BUT what you have to do is drag an item to a folder icon over to the leftmost folders list and onto desired folder there. If you try to do this inside with subfolder within a folder on the main work area it merely places it next to the folder in the window the folder is in. Just thought i would mention this, in case other users tried to do this in the main work area. It would be nice if you could do this with subfolders in the work area. But it's not that important.