Trackpad Commander assignments pane
Use the Trackpad Commander assignments pane in VoiceOver Utility to assign VoiceOver commands to trackpad gestures.
To open VoiceOver Utility, press Command-F5 to turn VoiceOver on, then press VO-F8.
Note: VO represents the VoiceOver modifier.
Modifier pop-up menu
Click the pop-up menu, then choose the modifier key you want to use with gestures. By default, no modifier is used.
Indicates the gestures you can assign VoiceOver commands to.
Click the command field to display pop-up menus for the different types of commands you can assign to a gesture.