From the App menu, hover over the Directory app thumbnail and click "App Settings"

From this page you can begin adding terms, and then you could access the list of terms to organize or edit them.

To enter a new term, click on the "Add a New Term" option. Complete the fields with your term (or name), and description (or contact information). Add categories or tags if you want your list to be categorized, then save.

To edit or delete a term, click on "Browse/Edit Terms". To delete, click the "Delete" button. To edit, click on the term, change what you need, then save.

Directory can be installed multiple times, should you require separate directories on your site. 
You will need to link to each directory from your menus.

For more information on the Directory Application view our Marketplace