odoo/addons/olap_extract/olap_extract_wizard.xml

<?xml version="1.0" ?>
<openerp>
	<data>
		<wizard
			string="Olap Extract"
			model="olap.schema"
			name="olap.extract.schema"
			menu= "True"
 			id="bi_olap_extract_schema"/>

	</data>
</openerp>