On Mac computers, right click is known as secondary click or Control click. If your mouse, trackpad, or other input device doesn't include a right-click button or other way to perform a right click, just hold down the Control key on your keyboard while you click.
The following Apple input devices can right-click and perform other gestures without the Control key.
Right-click with an Apple trackpad
Right-click with an Apple mouse
Using your Magic Mouse or Mighty Mouse, click the right side of the mouse.
To set up secondary click and other mouse features, choose Apple () menu > System Preferences, then click Mouse.