odoo16/addons/sale_timesheet/views/product_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="view_product_timesheet_form" model="ir.ui.view">
        <field name="name">product.template.timesheet.form</field>
        <field name="model">product.template</field>
        <field name="inherit_id" ref="sale.product_template_form_view"/>
        <field name="arch" type="xml">
            <field name="product_tooltip" position="after">
                <label for="product_tooltip" string="" attrs="{'invisible': ['|', ('type', '!=', 'service'), ('service_policy', '!=', 'ordered_prepaid')]}"/>
                <div attrs="{'invisible': ['|', ('type', '!=', 'service'), ('service_policy', '!=', 'ordered_prepaid')]}" class="fst-italic text-muted">
                    Warn the salesperson for an upsell when work done exceeds
                    <field name="service_upsell_threshold" widget="percentage" class="oe_inline"/>
                    of hours sold. <field name="service_upsell_threshold_ratio" class="oe_inline" attrs="{'invisible': [('service_upsell_threshold_ratio', '=', False)]}"/>
                </div>
            </field>
        </field>
    </record>

    <record id="product_template_view_search_sale_timesheet" model="ir.ui.view">
        <field name="name">product.template.search.timesheet</field>
        <field name="model">product.template</field>
        <field name="inherit_id" ref="product.product_template_search_view"/>
        <field name="mode">primary</field>
        <field name="arch" type="xml">
            <xpath expr="//filter[@name='consumable']" position="after">
                <separator/>
                <filter string="Time-based services" name="product_time_based" domain="[('type', '=', 'service'), ('invoice_policy', '=', 'delivery'), ('service_type', '=', 'timesheet')]"/>
                <filter string="Fixed price services" name="product_service_fixed" domain="[('type', '=', 'service'), ('invoice_policy', '=', 'order'), ('service_type', '=', 'timesheet')]"/>
                <filter string="Milestone services" name="product_service_milestone" domain="[('type', '=', 'service'), ('invoice_policy', '=', 'delivery'), ('service_type', '=', 'manual')]"/>
            </xpath>
        </field>
    </record>

    <record id="product_template_action_default_services" model="ir.actions.act_window">
        <field name="name">Services</field>
        <field name="res_model">product.template</field>
        <field name="view_mode">tree,form</field>
        <field name="search_view_id" ref="sale_timesheet.product_template_view_search_sale_timesheet"/>
        <field name="context">{'search_default_services': 1, 'default_detailed_type': 'service'}</field>
    </record>

</odoo>