Perform the following steps:
In a contacts folder, select the contact list that you want to edit, then choose File -> Open. Alternatively, double-click on the contact list.
A Contact List Editor dialog is displayed with the details of the contact list.
Use the Contact List Editor dialog to modify the information for the contact list. For information about the elements in the Contact List Editor dialog, see To Add a Contact List.
Choose File -> Save to save your changes.