Setup a home directory or virtual directories with proper folder permissions, then client side can download files from these directories (or upload files into these directories).
It can be a home directory or virtual directories. If added as a virtual directory, the physical directory will be shown to the user as a virtual directory. For example, "D:/book" will be shown as subdirectory "/book" and "E:\movie" will be shown as subdirectory "/media/movie" (suppose you have a subfolder "/media" under the home directory).
Edit the selected directory.
Delete the selected directory.