magento-test/app/code/Magento/Captcha/Test/Mftf/Section/StorefrontCheckoutPaymentMethodsSection.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
    <section name="StorefrontCheckoutPaymentMethodsSection">
        <element name="purchaseOrder" type="radio" selector="#purchaseorder" timeout="30"/>
        <element name="purchaseOrderNumber" type="input" selector="#po_number" timeout="30"/>
        <element name="bankTransfer" type="radio" selector="#banktransfer" timeout="30"/>
        <element name="cashOnDelivery" type="radio" selector="#cashondelivery" timeout="30"/>
    </section>
</sections>