Panels and Menus pane of the Visuals category
Use the Panels and Menus pane of the Visuals category in VoiceOver Utility to customize the size and appearance of the caption and braille panels and menus in VoiceOver, such as the Commands menu.
To open VoiceOver Utility, press Command-F5 to turn VoiceOver on, then press VO-F8.
Note: VO represents the VoiceOver modifier.
Show caption panel
Display the caption panel, which can be helpful when working with sighted users.
Show Braille Panel
Click the pop-up menu, then choose how you want to display the braille panel: Off, On, or Automatic.
When set to the default setting, Automatic, the braille panel is shown when you connect a refreshable braille display to your Mac.
The panel simulates a refreshable braille display and includes a language translation of the braille.
Font Size for Panels and Menus
Drag the slider toward Small or Large to set the font size for the caption and braille panels, and for menus in VoiceOver.