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="//div[@name='buttons']" position="inside">
          <button class="oe_inline oe_stat_button" type="action" name="%(eiru_crm.crm_task_from_partner)d"
            icon="fa-calendar"
            context="{'search_default_partner_id': active_id}">
            <field name="activity_count" string="Actividad" widget="statinfo"/>
					</button>
        </xpath>
        <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>

      </field>
    </record>
  </data>
</openerp>