partner_view.xml

<?xml version="1.0"?>
<openerp>
    <data>
        
        <record id="view_partner_form_add_agent" model="ir.ui.view">
            <field name="name">res.partner.form.add_agent</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
            <field name="priority" eval="22"/>
            <field name="arch" type="xml">
                <xpath expr="/form/sheet/notebook/page/group/group/field[@name='section_id']" position="after">
                    <field name="agent" string="Consultancy"></field>
                </xpath>
            </field>
        </record>

        <record id="view_partner_form_add_agents" model="ir.ui.view">
            <field name="name">res.partner.form.add_agents</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="view_partner_form_add_agent"/>
            <field name="arch" type="xml">
                <field name="agent" position="after">
                    <group colspan="4">
                        <separator string="Agents/Consultancy" attrs="{'invisible':[('agent','==',True)]}"/>
                        <field name="commission_ids" colspan="4" nolabel="1" attrs="{'invisible':[('agent','==',True)]}">
                            <tree string="Agents and Commissions" editable="top">
                                <field name="agent_id" on_change="onchange_agent_id(agent_id)"/>
                                <field name="commission_id" on_change="onchange_commission_id(agent_id,commission_id)"/>
                            </tree>
                        </field>
                    </group>
                </field>
            </field>
        </record>

    </data>
</openerp>