account_config_settings_view.xml

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

<!--    account     -->

        <record id="view_account_settings_currency_xchange_form" model="ir.ui.view">
            <field name="name">view_account_settings_currency_xchange_form</field>
            <field name="model">account.config.settings</field>
            <field name="inherit_id" ref="account_voucher_cash_basis.view_account_config_settings"/>
            <field name="arch" type="xml">
                <xpath expr="/form/group[6]" position="after">
                    <group>
                        <label for="id" string="VAT on Payment"/>
                        <div name="vat_payment_config">
                            <div>
                                <field name="vat_on_payment" class="oe_inline"/>
                                <label for="vat_on_payment"/>
                            </div>
				            <div>
                                <label for="vat_payment_lines"/>
                                <field name="vat_payment_lines" class="oe_inline"
                                    widget="selection"
                                    on_change="onchange_vat_payment_line(vat_payment_lines, context)"/>
                            </div>
                            <div attrs="{'invisible': [('vat_payment_lines', '=', 'shadow_move')]}">
                                <label for="vat_config_error"/>
                                <field name="vat_config_error" class="oe_inline"/>
                            </div>
                        </div>
                    </group>
                </xpath>
            </field>
        </record>
    </data>
</openerp>