<?xml version="1.0"?>
<tree string="Meetings" sample="1" multi_edit="1">
                <header>
                    <button name="action_open_composer" type="object" context="{'composition_mode':'mass_mail'}" string="Send Mail"/>
                </header>
                <field name="name" string="Subject" decoration-bf="1" attrs="{'readonly':[('recurrency','=',True)]}"/>
                <field name="start" string="Start Date" readonly="1"/>
                <field name="stop" string="End Date" readonly="1"/>
                <field name="user_id" widget="many2one_avatar_user" attrs="{'readonly':[('recurrency','=',True)]}" optional="hide"/>
                <field name="partner_ids" widget="many2many_tags" attrs="{'readonly':[('recurrency','=',True)]}" optional="show"/>
                <field name="alarm_ids" widget="many2many_tags" optional="hide" attrs="{'readonly':[('recurrency','=',True)]}"/>
                <field name="categ_ids" widget="many2many_tags" optional="hide" attrs="{'readonly':[('recurrency','=',True)]}" options="{'color_field': 'color'}"/>
                <field name="recurrency" optional="hide" readonly="1"/>
                <field name="privacy" optional="hide" attrs="{'readonly':[('recurrency','=',True)]}"/>
                <field name="show_as" optional="hide" attrs="{'readonly':[('recurrency','=',True)]}"/>
                <field name="location" optional="show" attrs="{'readonly':[('recurrency','=',True)]}"/>
                <field name="duration" widget="float_time" readonly="1"/>
                <field name="description" optional="hide" attrs="{'readonly':[('recurrency','=',True)]}"/>
                <field name="allday" invisible="1"/>
                <field name="message_needaction" invisible="1"/>
            </tree>
        