Apple MacBook Pro (13-inch, Early 2011) - Manual (Page 27)

27 Chapter 2 Life with Your MacBook Pro
 Secondary-clicking or “right-clicking” lets you access shortcut menu commands.
• To set up two-finger secondary-clicking anywhere on the trackpad, select
“Secondary click” in the Point & Click pane of Trackpad preferences.
• To set up a one-finger secondary-click zone in the bottom left or right corner of the
trackpad, select “Secondary click” in the Point & Click pane of Trackpad preferences,
and choose an option from the pop-up menu.
Secondary-click zone
Note: You can also secondary-click by holding down the Control key while you click.