magento-test/app/code/Magento/Newsletter/Test/Mftf/Section/AdminNewsletterConfigPageSubscriptionOptionsSection.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="AdminNewsletterConfigPageSubscriptionOptionsSection">
        <element name="allowGuestSubscription" type="checkbox" selector="input[name='groups[subscription][fields][allow_guest_subscribe][inherit]']" timeout="30"/>
        <element name="guestSubscription" type="select" selector="#newsletter_subscription_allow_guest_subscribe" timeout="30"/>
    </section>
</sections>