suite/sale_timesheet_work_entry_rate/views/timesheet_views.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>

    <record id="view_task_form2_inherited_inherit" model="ir.ui.view">
        <field name="name">project.task.form.inherited.inherit</field>
        <field name="model">project.task</field>
        <field name="inherit_id" ref="hr_timesheet.view_task_form2_inherited"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='timesheet_ids']/tree/field[@name='unit_amount']" position="after">
                <field name="work_billing_amount" widget="timesheet_uom" />
            </xpath>
            <xpath expr="//field[@name='timesheet_ids']/form//field[@name='unit_amount']" position="after">
                <field name="work_billing_amount" widget="timesheet_uom" />
            </xpath>
        </field>
    </record>

    <template id="portal_timesheet_table_inherit" inherit_id="hr_timesheet.portal_timesheet_table">
        <xpath expr="//tr[@t-as='timesheet']/td[last()]" position="replace">
            <td class="text-right" t-if="not timesheet.work_type_id or timesheet.work_billing_rate == 1.0">
                <span t-field="timesheet.unit_amount" t-options="{&quot;widget&quot;: &quot;duration&quot;, &quot;unit&quot;: &quot;hour&quot;, &quot;round&quot;: &quot;minute&quot;}"/>
            </td>
            <td class="text-right" t-else="">
                <del t-field="timesheet.unit_amount" class="text-muted" t-options="{&quot;widget&quot;: &quot;duration&quot;, &quot;unit&quot;: &quot;hour&quot;, &quot;round&quot;: &quot;minute&quot;}"/>
                <br/>
                <span t-field="timesheet.work_billing_amount" t-options="{&quot;widget&quot;: &quot;duration&quot;, &quot;unit&quot;: &quot;hour&quot;, &quot;round&quot;: &quot;minute&quot;}"/>
            </td>
        </xpath>
    </template>

</odoo>