Change Alternate Control Methods preferences for accessibility on Mac
On your Mac, use the Alternate Control Methods pane of Accessibility Pointer Control preferences to enable Mouse Keys, perform certain mouse actions using keyboard shortcuts, assistive switches, or facial expressions, or to move the pointer using head pointer.
To change these preferences, choose Apple menu > System Preferences, click Accessibility, click Pointer Control, then click Alternate Control Methods.
Enable Mouse Keys
Move the pointer and press the mouse button using the keyboard or a numeric keypad.
Note: When Mouse Keys is on, you can’t use the keyboard or numeric keypad to enter text.
To customize Mouse Keys, click Options:
Enable alternate pointer actions
Perform a left-click, right-click, double-click, triple-click, or drag-and-drop action using keyboard shortcuts, assistive switches, or facial expressions (such as a smile or an open mouth).
To specify keys, switches, and facial expressions, or to see the ones currently specified, click Options.
Note: A left-click, right-click, double-click, or triple-click action occurs as soon as you use the specified switch. For example, if you set the switch for Left Click to the facial expression Stick Out Tongue, a left click occurs as soon as you stick out your tongue.
A drag-and-drop action requires you to use a switch twice: once to drag, then again to drop. For example, when you stick out your tongue, drag is activated; to drop, you must stick out your tongue again.
Enable head pointer
Move the pointer using the movement of your face or head as detected by the camera that’s built into or connected to your Mac.
To customize head pointer, click Options.
To quickly enable or disable Mouse Keys, alternate pointer actions, or head pointer using the Accessibility Shortcuts panel, press Option-Command-F5 (or if your Mac or Magic Keyboard has Touch ID, quickly press Touch ID three times).
To specify which options are available in the panel, choose Apple menu > System Preferences, click Accessibility, then click Shortcut.