odoo17e-kedaikipas58/addons/l10n_be_hr_payroll_fleet/security/security.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <!-- Note for later versions, the group Employee Manager should become contract manager -->
    <record id="hr.group_hr_manager" model="res.groups">
        <field name="implied_ids" eval="[(4, ref('fleet.fleet_group_manager'))]"/>
    </record>
</odoo>