Use VoiceOver in Mission Control on Mac
Mission Control shows all the windows open on the desktop neatly arranged so it’s easy to find the one you need. Apps that are in full screen or Split View, and desktop spaces you created, are shown in the Spaces Bar along the top edge of the screen.
Note: VO represents the VoiceOver modifier. See Use the VoiceOver modifier.
Enter Mission Control by pressing Control-Up Arrow.
To exit Mission Control without doing anything, press the keys again.
In Mission Control, do any of the following:
Open an item: Press VO-Left Arrow or VO-Right Arrow to navigate to the item, then press VO-Space bar.
Open an item in the Spaces Bar: Press VO-Left Arrow to navigate to the Spaces Bar, press VO-Shift-Down Arrow to interact with it, press VO-Right Arrow to navigate to the list of spaces, interact with it, navigate to the item, then press VO-Space bar.
Create a desktop space: Press VO-Left Arrow to navigate to the Spaces Bar, press VO-Shift-Down Arrow to interact with it, then press VO-Space bar to interact with the Add Desktop button.
Remove a desktop space: Press VO-Left Arrow to navigate to the Spaces Bar, press VO-Shift-Down Arrow to interact with it, press VO-Right Arrow to navigate to the list of spaces, interact with it, navigate to the space you want to remove, then press VO-Command-Escape. Press Return to confirm.
You can easily move between desktops while you’re working—just press Control-Right Arrow or Control-Left Arrow.