pos/pos_picking_load/views/view_pos_config.xml

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

<odoo>

    <record  id="view_pos_config_form" model="ir.ui.view">
        <field name="model">pos.config</field>
        <field name="inherit_id" ref="point_of_sale.pos_config_view_form"/>
        <field name="arch" type="xml">

            <xpath expr="//h2[@name='order']" position="before">
                <h2 name="order">Picking Load</h2>
                <div class="row mt16 o_settings_container">
                    <div class="col-12 col-lg-6 o_setting_box">
                        <div class="o_setting_left_pane">
                            <field name="iface_load_picking"/>
                        </div>
                        <div class="o_setting_right_pane">
                            <label for="iface_load_picking" string="Load Pickings"/>
                            <div class="text-muted">
                                Enable the possibility to load pickings in the Point of Sale
                            </div>
                            <div class="content-group mt16" attrs="{'invisible': [('iface_load_picking', '=', False)]}">
                                    <div class="row mt16">
                                        <label string="Max Picking Quantity To Load" for="iface_load_picking_max_qty" class="col-lg-3 o_light_label"/>
                                        <field name="iface_load_picking_max_qty"/>
                                    </div>
                                </div>
                        </div>
                    </div>
                </div>
            </xpath>
        </field>
    </record>

</odoo>