magento-test/app/code/Magento/Customer/Test/Mftf/ActionGroup/AdminClickEditLinkForDefaultBillingAddressActionGroup.xml

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

<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
    <actionGroup name="AdminClickEditLinkForDefaultBillingAddressActionGroup">
        <annotations>
            <description>Clicks the Edit link for Default Billing Address.</description>
        </annotations>

        <click selector="{{AdminCustomerAddressesDefaultBillingSection.editButton}}" stepKey="clickEditDefaultBillingAddress"/>
        <waitForPageLoad stepKey="waitForFormToLoad"/>
    </actionGroup>
</actionGroups>