I have a 2018-era Mac Mini (Macmini8,1) running Catalina 10.15.7.
I am unable to get the system to recognize any commands I hold down during system reset. I have tried both my existing wireless keyboard (Microsoft with a USB dongle) and a plug-in USB keyboard. Regardless, if I hold down
Option during boot, I get no menu. If I hold down
Command-R, I get no Recovery mode. If I hold down
Command-Option-P-R I do not get the behavior that indicates the NVRAM has been zapped. In all cases, I boot directly into the normal OS and log-in screen.
I did try the command line technique, but this did not solve the problem I'm after, as it's not possible to adjust the System Security Tools when you do it this way. :-(