<?xml version="1.0"?>
<list string="Workcenter Productivity">
                <field name="date_start"/>
                <field name="date_end"/>
                <field name="workcenter_id"/>
                <field name="user_id"/>
                <field name="loss_id"/>
                <field name="duration" string="Duration (minutes)" sum="Duration"/>
                <field name="company_id" groups="base.group_multi_company"/>
            </list>
        