When looking at the lists section, you have the ability to sort lead lists by ID (Numerically) or List Name (Alphabetically).
This feature allows you to manage a long list of leads allowing you to find them more efficiently.
From the Dashboard, click on Call Center and select Lists from the drop down
Sort your lists by clicking the column title. You may sort your list by id, name, campaign, status, last called, created date, total leads, and a number of dialable leads.
Note: Click on column title twice to sort it from smallest to largest and vice versa.