real_estate_base/views/top_meetings_view.xml

<openerp>
    <data>
    	<record id="crm_top_meetings_view" model="ir.ui.view">
            <field name="name">crm.top.meetings.view</field>
            <field name="model">real.estate.top</field>
            <field name="type">form</field>
            <field name="inherit_id" ref="real_estate_base.real_estate_top_form"/>
            <field name="arch" type="xml">
                <form string="Real Estate Top" position="before">
                	<div class="oe_right oe_button_box" name="buttons1">
                		<button class="oe_inline oe_stat_button" type="action"
          						name="%(calendar.action_calendar_event)d"
                      			icon="fa-calendar"
                      			context="{'search_default_top_id': active_id}">
                            <field string="Top Meeting" name="top_meetings" widget="statinfo"/>
                        </button>
                	</div>
                </form>
            </field>
        </record>
    </data>
</openerp>