tryton/modules/project_revenue/view/work_form.xml

<?xml version="1.0"?>
<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
this repository contains the full copyright notices and license terms. -->
<data>
    <xpath expr="/form/notebook/page[@id='general']/label[@name='timesheet_duration']"
        position="before">
        <label name="product"/>
        <field name="product"/>
        <label name="list_price"/>
        <field name="list_price"/>
        <newline/>
    </xpath>
    <xpath expr="/form/notebook/page[@id='general']/field[@name='total_effort']"
        position="after">
        <newline/>
        <label name="cost"/>
        <field name="cost"/>
        <label name="revenue"/>
        <field name="revenue"/>
    </xpath>
</data>