odoo16/addons/pos_epson_printer/views/pos_config_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="pos_iot_config_view_form" model="ir.ui.view">
        <field name="name">pos.iot.config.form.view</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='other_devices']//div[hasclass('o_setting_right_pane')]" position="inside">
                <div class="content-group" attrs="{'invisible' : [('other_devices', '=', False)]}">
                    <field name="epson_printer_ip" placeholder="Epson Receipt Printer IP Address" />
                    <div class="row" attrs="{'invisible': [('epson_printer_ip', 'in', [False, ''])]}">
                        <label string="Cashdrawer" for="iface_cashdrawer" class="col-lg-3 o_light_label"/>
                        <field name="iface_cashdrawer"/>
                    </div>
                </div>
                <div role="alert" class="alert alert-warning" attrs="{'invisible': ['|', '|', ('iface_print_via_proxy', '!=', True), ('other_devices', '!=', True), ('epson_printer_ip', 'in', [False, ''])]}">
                    The Epson receipt printer will be used instead of the receipt printer connected to the IoT Box.
                </div>
            </xpath>
        </field>
    </record>
</odoo>