Follow the numbered steps below to add the List Style Properties plugin to CKEditor.

1. Download the List Style Properties plugin from http://ckeditor.com/addon/liststyle. This will download a folder such as liststyle_version.zip to your Downloads folder.
2. Extract the .zip. After extraction, you should have a folder named liststyle.
3. Move the liststyle folder to /web/server/root/ckeditor/plugins/.
4. In the config.js file, which is located at /web/server/root/ckeditor/, add the line config.extraPlugins = 'liststyle';. Below is an example of what your config.js file might look like after adding config.extraPlugins = 'liststyle';

CKEDITOR.editorConfig = function( config ) {
  config.extraPlugins = 'liststyle';
  config.toolbar [
  et cetera . . .
  ];
};

Now, when you right click on a numbered list or bulleted list in CKEditor, there should be a Properties option.