First select the message you wish to have more information about within its campaign under Reporting. Now scroll down until you reach the area beneath the pie chart with all e-mail client:

The urls, clicks, click quota and link numbers are listed on the right, starting with the most clicked link. Move over a certain link to mark it with a green border.

You can activate auto scrolling, merge links with the same target url as well as displaying the clicks in the preview: