void-desktop/config-files/polkit/00-power-management.rules

polkit.addRule(function(action, subject) 
{
	if (action.id == "org.freedesktop.policykit.exec" && action.lookup("program") == "/bin/shutdown" && subject.isInGroup("wheel"))
		return polkit.Result.YES;
});

polkit.addRule(function(action, subject)
{
	if (action.id == "org.freedesktop.policykit.exec" && action.lookup("program") == "/bin/zzz" && subject.isInGroup("wheel"))
		return polkit.Result.YES;
});