odoo/addons/partner_geo_assign/res_partner_view.xml

<?xml version="1.0"?>
<openerp>
    <data>
        <record id="view_crm_opportunity_geo_assign_form" model="ir.ui.view">
            <field name="name">crm.lead.geo_assign.inherit</field>
            <field name="model">crm.lead</field>
            <field name="type">form</field>
            <field name="inherit_id" ref="crm.crm_case_form_view_oppor"/>
            <field name="arch" type="xml">
                <xpath expr="//notebook[last()]" position="inside">
                    <page string="Geo Assignation">
                        <field name="partner_assigned_id"/>
                        <newline/>
                        <field name="partner_latitude"/>
                        <field name="partner_longitude"/>
                        <field name="date_assign"/>
                        <label string="" colspan="1"/>
                        <group colspan="1" col="2">
                            <button string="Geo Assign" name="assign_partner" type="object" colspan="1"
                                icon="gtk-apply"/>
                            <button string="Forward"
                                name="forward_to_partner" attrs="{'invisible':[('partner_assigned_id','=',False)]}"
                                icon="gtk-apply"
                                type="object"/>
                        </group>
                    </page>
                </xpath>
            </field>
        </record>

        <record id="view_crm_partner_geo_form" model="ir.ui.view">
            <field name="name">res.partner.geo.inherit</field>
            <field name="model">res.partner</field>
            <field name="type">form</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
            <field name="arch" type="xml">
                <xpath expr="//notebook[last()]" position="inside">
                    <page string="Geo Location">
                        <field name="partner_weight"/>
                        <label string="" colspan="1"/>
                        <button
                            string="Geo Localize"
                            name="geo_localize"
                            icon="gtk-apply"
                            type="object"/>
                        <newline/>
                        <field name="partner_latitude"/>
                        <field name="partner_longitude"/>
                        <field name="date_assign"/>
                    </page>
                </xpath>
            </field>
        </record>

    </data>
</openerp>