magento-test/app/code/Magento/Config/Test/Mftf/ActionGroup/AdminConfigCreateNewAccountActionGroup.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="SetGroupForValidVATIdIntraUnionActionGroup">
        <annotations>
            <description>Goes to the 'Configuration' page for 'Customer Configuration'. Sets the 'Group For Valid VAT ID Intra Union' option. Clicks on the Save button. Validates the Save message is present.</description>
        </annotations>
        <arguments>
            <argument name="value" type="string"/>
        </arguments>

        <amOnPage url="{{AdminStoresCustomerConfigurationPage.url}}" stepKey="navigateToCustomerConfigurationPage"/>
        <waitForPageLoad stepKey="waitForPageLoad"/>
        <conditionalClick stepKey="expandCreateNewAccountOptionsTab" selector="{{AdminStoresCustomerConfigurationSection.createNewAccOpt}}" dependentSelector="{{AdminStoresCustomerConfigurationSection.enableAutoAssignCustomerGroup}}" visible="false"/>
        <waitForElementVisible selector="{{AdminStoresCustomerConfigurationSection.createNewAccOpt}}" stepKey="waitForElementsAppeared"/>
        <selectOption selector="{{AdminStoresCustomerConfigurationSection.groupForValidVATIdIntraUnion}}" userInput="{{value}}" stepKey="selectValue"/>
        <click selector="{{AdminStoresCustomerConfigurationSection.createNewAccOpt}}" stepKey="collapseTab"/>
        <click selector="{{ContentManagementSection.Save}}" stepKey="saveConfig"/>
        <waitForPageLoad stepKey="waitForConfigSaved"/>
        <see userInput="You saved the configuration." stepKey="seeSuccessMessage"/>
    </actionGroup>
</actionGroups>