[click 'Directories' on the admin index]

To group and organise the files you need to upload to the webserver, you can create new directories or folders. Simply type the name of the directory in the text box and then click the "Create Directory/Folder" button.

To delete any directory [and its entire contents] click the "Delete" link on the right hand side. Take care as there is no ability to undo this operation and while it is very easy to recreate a deleted directory, this does not restore any deleted contents.