Set custom URL to 'Add to Cart' in Backend Product Page

Copy<reference name="content">
    <block type="es/catalog_product_view_layoutUpdate_application" name="layoutupdate_application"/>
</reference>
<reference name="product.info">
    <action method="setCustomAddToCartUrl"><url>/controller/catalog_product/route</url></action>
</reference>
<reference name="head">
    <action method="addItem"><type>skin_js</type><name>js/aes.js</name>
    <action method="addJs"><script>dir/jsonp.js</script></action>
</action>
</reference>

Copy<!-- 
1. Add Vue.js.
2. Insert block to handle input of multiple employees.
3. Do not render custom options, render separately in block 'employee/form'.
-->
<reference name="head">
     <action method="addJs"><script>lib/vue2611dev.js</script></action>
</reference>
<reference name="product.info.options.wrapper">
    <block type="employee/form" name="employee_form" />
</reference>
<remove name="product.info.options" />