When you have an account open you have two ways to see directory listings for that account.
The Account > Directory Listings menu displays a view with all directory listings for the account.

This view lets you select a specific listing to open the view/edit page (same as selecting a row in search results). See Viewing and Editing a Directory Listing. You can also export all listings on the account to a spreadsheet file for your directory listing vendor.

If the account has one or more missing listings, they will be shown in a collapsible list. Each missing link listed will have an associated Add Listing Information link that opens the Add Directory Listing page. See Adding a Directory Listing.

The other route is via the Services and Features page where you can drill down to a directory listing product. On selecting the product, the Detail panel (right side of the page) will have an Add Directory Listing button if listing does not yet exist, or an Edit Directory Listing button if the listing is already in place.
See Adding a Directory Listing or Viewing and Editing a Directory Listing as applicable.
