eiru_crm/views/partner_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
  <data>
    <record id="partner_form_buttons" model="ir.ui.view">
      <field name="name">partner_form_buttons</field>
      <field name="model">res.partner</field>
      <field name="inherit_id" ref="base.view_partner_form"/>
      <field name="priority" eval="50"/>
      <field name="arch" type="xml">
        <xpath expr="//button[@name='schedule_meeting']" position="attributes">
          <attribute name="invisible">1</attribute>
        </xpath>
        <xpath expr="//button[@name='%(crm.crm_case_categ_phone_incoming0)d']" position="attributes">
          <attribute name="invisible">1</attribute>
        </xpath>
        <notebook>
          <page string="Historial Tareas de CRM">
            <field name="task_ids" widget="many2one_clickable">
              <tree editable="top" colors="red:expired_date == True and state == 'pending';gray:state == 'cancel';green:state == 'pending'">
                <field name="task_type_id" options='{"no_open": True, "no_create": 1, "no_create_edit": 1}' required="True"/>
                <field name="name"/>
                <field name="user_id" required="True"/>
                <field name="date_action_next"/>
                <field name="state"/>
                <field name="expired_date" invisible='1'/>
                <field name="description"/>

                <button name="action_done" string="Realizado" type="object" icon="gtk-apply" attrs="{'invisible':[('state','=','done')]}"/>
                <button name="action_done" string="Pendiente" type="object" icon="gtk-undo" attrs="{'invisible':[('state','=','pending')]}"/>
                <button name="action_cancel" string="Cancelado" type="object" icon="gtk-cancel" attrs="{'invisible':[('state','=','cancel')]}"/>

              </tree>
            </field>
          </page>
         </notebook>
           <group col="3" position="inside">
             <field name="instagram"/>
             <button name="goto_instagram" string="Ir" type="object"/>
           </group>
      </field>
    </record>
  </data>
</openerp>