On Mon, 11 Jan 2021 10:23:04 -0800 Kenneth Porter wrote:
Now I'd like to allow someone to shut it down at the console without logging in.
How do you want the person to shut it down without logging in? Some computers have a "smart" power switch pushbutton that you can program to do a shutdown or a reboot depending on how long you hold the button down. Otherwise you'll need at least a keyboard, or possibly something like a joystick or a mouse button?