pos/pos_payment_terminal/pos_payment_terminal_view.xml

<?xml version="1.0"?>
<openerp>
    <data>
        <record id="view_pos_config_form" model="ir.ui.view">
            <field name="name">pos.config.form.view.inherit</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_cashdrawer" position="after">
                    <field name="iface_payment_terminal"/>
                </field>
            </field>
        </record>
        <record id="view_account_journal_pos_user_form" model="ir.ui.view">
            <field name="name">POS journal inherit</field>
            <field name="model">account.journal</field>
            <field name="inherit_id" ref="point_of_sale.view_account_journal_pos_user_form"/>
            <field name="arch" type="xml">
                <field name="self_checkout_payment_method" position="after">
                    <field name="payment_mode"/>
                </field>
            </field>
        </record>

		<template id="index" name="pos_payment_terminal index" inherit_id="point_of_sale.index">
			<xpath expr="//link[@id='pos-stylesheet']" position="after">
				<link rel="stylesheet" href="/pos_payment_terminal/static/src/css/pos_payment_terminal.css" id="pos_payment_terminal-stylesheet"/>
			</xpath>
		</template>
    </data>
</openerp>