pos/pos_loyalty/views/pos_config_view.xml

<?xml version="1.0"?>
<odoo>
    <record id="pos_config_view_form" model="ir.ui.view">
        <field name="name">pos.config.form</field>
        <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="//div[@id='pricelist_setting']" position="after">
                <div class="col-xs-12 col-md-6 o_setting_box" title="abc">
                    <div class="o_setting_right_pane">
                        <label for="loyalty_id" string="Loyalty Program (OCA)"/>
                        <div class="text-muted">
                            Loyalty program that will be available in this PoS
                        </div>
                        <div class="content-group mt16">
                            <field name="loyalty_id"/>
                        </div>
                    </div>
                </div>
            </xpath>
        </field>
    </record>
</odoo>