<?xml version="1.0" encoding="UTF-8"?>
<odoo>
     <record id="view_dham_customers_form" model="ir.ui.view">
        <field name="name">KSK DN</field>
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_partner_form"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='type']" position="after">
                <field name="test"/>
                <button name="shoeit" string="Show It"/>
            </xpath>
        </field>
     </record>

</odoo>

i.imgur.com/ERVKMLM.png

My button and field aren't in same line - i'm not good html.

Thannks in advance.