pos/pos_quick_logout/views/pos_config_view.xml

<?xml version="1.0" encoding="utf-8"?>

<odoo>

    <record id="view_pos_config_view_form_quick_logout" model="ir.ui.view">
        <field name="name">pos.config.form.quick.logout</field>
        <field name="model">pos.config</field>
        <field name="inherit_id" ref="point_of_sale.pos_config_view_form"/>
        <field name="priority" eval="30"/>
        <field name="arch" type="xml">
            <xpath expr="//div[hasclass('o_settings_container')][2]"
                position="inside">
                <div class="col-12 col-lg-6 o_setting_box">
                    <div class="o_setting_right_pane">
                        <span class="o_form_label">Logout Timeout</span>
                        <div class="content-group mt16">
                            <field name="logout_timeout" colspan="4"
                                nolabel="1"/>
                        </div>
                    </div>
                </div>
            </xpath>
        </field>
    </record>

</odoo>