When you have a large address book, you can organize it in several ways to make it easy to retrieve contacts and groups. You can sort names alphabetically by first name, last name, or e-mail address, and you can order the list in ascending or descending order. You can also view a list of groups separately from the contacts list.
To switch columns between ascending and descending sort order, click the column heading.
To view a list of your mailing groups, click the View menu, and then make sure that Groups List has a check mark.