You can use the Cut, Copy, Paste, Reorder, Rename and Delete options from the options menu in the Data Security Pane in the same way as for folders and workboards in the Workboards Pane.
Data security definitions can be organized in a tree structure (like files and folders). Using the New Folder option, you can create folders and subfolders under the root Data Security folder.
You can also save a data security definition under a new name using the Save As option on the Application Bar.