Me wrote:

If your motherboard is the type that makes you hold down the power button
for about half an hour to turn it off, you can wire the reset switch in
parallel with the power switch(short push resets, long push powers off). I
have seen many computers that do this.

The only problem is, you got to make sure your computer do not go into
shutdown mode or standby as some computers will do that if you just
press the power button.

Mine is set up to suspend to ram, if I press the power button.
You can change it, by using the power settings.