operation.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>

        <record id="tandur_operation_action" model="ir.actions.act_window">
            <field name="name">Operation</field>
            <field name="res_model">mrp.routing.workcenter</field>
            <field name="view_mode">kanban,tree,form</field>
            <field name="help" type="html">
                <p class="o_view_nocontent_smiling_face">
                    Product
                </p>
            </field>
        </record>

        <menuitem id="tandur_operation_menu"
                  name="Operation"
                  parent="tandur_config_menu"
                  action="tandur_operation_action"
                  sequence="1"/>
    </data>

</odoo>