magento-test/app/code/Magento/Customer/Test/Mftf/Section/AdminCustomersNowOnlineGridSection.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="AdminCustomersNowOnlineGridSection">
        <element name="columnTitle" type="text" selector=".admin__action-dropdown-menu-content label[title='{{column}}']" parameterized="true"/>
        <element name="gridCell" type="text" selector="//tr[{{row}}]//td[count(//div[@data-role='grid-wrapper']//tr//th[contains(., '{{column}}')]/preceding-sibling::th) +1 ]" parameterized="true"/>
    </section>
</sections>