trytond-sale_rule/view/sale_form.xml

<?xml version="1.0"?>
<!-- This file is part of the sale_rule module for Tryton.
The COPYRIGHT file at the top level of this repository contains the full
copyright notices and license terms. -->
<data>
    <xpath expr="/form/notebook/page[@id=&quot;other&quot;]/field[@name=&quot;shipment_method&quot;]"
            position="after">
        <label name="add_rules"/>
        <field name="add_rules"/>
    </xpath>
    <xpath expr="/form/notebook/page/group/group/button[@name='cancel']"
            position="before">
        <button name="apply_rules" string="Apply Rules"
            icon="tryton-star" colspan="2"/>
    </xpath>
</data>