Custom Views allow for additional data columns to display in List View that aren't already present in the Default View
Creating a View
Go to the Contacts Tab then to List View for the section of Contacts the custom View should be created in.
Click Add to the right of the View drop-down
Click on fields wanted in the Available Fields box, and use the arrow to move them over to the Selected Fields to Display box. Last name and first name are required. The order the columns appear can be changed using the arrows to the right of the Selected Fields to Display box. Once all fields are chosen, click Save. The View is now available to select from the View drop-down list