Use your keyboard like a mouse with Mac
You can use your keyboard to perform many of the same actions you perform using the mouse, such as navigating to or selecting menus, icons, text boxes, lists and items in windows and dialogues. With keyboard navigation, you can use the Tab key to move focus forwards, or press the Shift and Tab keys at the same time to move focus back.
On your Mac, choose Apple menu > System Preferences, click Keyboard, then click Shortcuts.
Do any of the following:
To navigate to all controls on the screen, select “Use keyboard navigation to move focus between controls”.
To navigate only to text boxes and lists on the screen, deselect “Use keyboard navigation to move focus between controls”.