OnOff SHIM with RetroPIE

I have a RetroArcade and want an on/off switch or button to power on/off the Raspberry PI3. Can this work with an arcade button?

Yes, you just connect a suitable arcade button across the terminals marked BTN on OnOff SHIM. It will act just like the onboard button. There’s no support for an external status LED though.

Thank you so much. I am new to Raspberry PI. I appreciate the help.