pos/pos_barcode_tare/views/pos_config_view.xml

<?xml version="1.0"?>


<odoo>
    <record model="ir.ui.view" id="view_pos_config_form">
        <field name="name">view.pos.config.form</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">
            <div id="posbox_reference" position="inside">
                <div class="col-12 col-lg-6 o_setting_box">
                   <div class="o_setting_left_pane">
                       <field name="iface_tare_label"/>
                   </div>
                   <div class="o_setting_right_pane">
                      <label for="iface_tare_label"/>
                         <div class="text-muted">
                            Show tare barcode printer button on top of the num pad.
                         </div>
                      </div>
                   </div>
                </div>
        </field>
    </record>
</odoo>