kodi.script.shutdownnas/resources/settings.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<settings>
	<category label="51000">
		<setting id="host" type="text" label="51001" default="" />
		<setting id="username" type="text" label="51002" default="" />
		<setting id="password" type="text" label="51003" option="hidden" default="" />
		<setting id="command" type="text" label="51004" default="shutdown -P now" />
	</category>
</settings>