cooperative-market/beescoop_pos/views/beescoop_pos.xml

<openerp>
    <data>
        <record model="ir.ui.view" id="beescoop_pos_inherit">
            <field name="name">bees.pos.config.form.view</field>
            <field name="model">pos.config</field>
            <field name="inherit_id" ref="point_of_sale.view_pos_config_form" />
            <field name="arch" type="xml">
                <field name="iface_tax_included" position="after">
                    <separator string="Bill Value" colspan="2" />
                    <field name="bill_value" nolabel="1" colspan="2" >
                        <tree editable="bottom">
                            <field name="name" />
                        </tree>
                    </field>
                </field>
            </field>
        </record>
    </data>
</openerp>