If your plugin provides a wizard GUI, embedding works basically in the same way. You will generally use:

	<wizard [...]>
		[...]
		<page id="page12">
			[...]
		</page>
		<embed id="plotoptions" component="rkward::plot_options"/>
		<page id="page13">
			[...]
		</page>
		[...]
	</wizard>
	

If the embedded plugin provides a wizard interface, its pages will be inserted right between "page12" and "page13" of your plugin. If the embedded plugin provides a dialog interface only, a single new page will be added between your pages "page12" and "page13". The user will never notice.