Upload a File
You can upload a file to the current folder you are in by dragging a file from your desktop or local folder into the file list, wait until you see the Green "+ Add file" indicator. You should drag the file slightly above or below any files that are already in the folder. If you drag a file directly onto another file you will be prompted to add to the file history.
You can also upload to the current folder using the Upload button located at the top of the file list.
To add a file to a folder that is a subfolder of your current location you can drag a file directly onto the folder. Notice the folder will turn green to indicate you are dragging into a folder:
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