Well yes that works for this specific window but that was just an example. That are much more windows opening this kind of window and I don't want to memorize all the shortcut keywords for each action Thank you though..
You're right.
I was looking at #1 , then I saw there's exactly what you said at the very bottom
And what I figured out after selecting that "All controls" , I can move to another option with the "Tab" key but can select that with the "Space" key instead of "Enter".