<?xml version="1.0"?>
<pivot string="Timesheets" sample="1">
                    <field name="employee_id" type="row"/>
                    <field name="date" interval="month" type="col"/>
                    <field name="unit_amount" string="Time Spent" type="measure" widget="timesheet_uom"/>
                    <field name="amount" string="Timesheet Costs"/>
                </pivot>
            