magento-test/app/code/Magento/Customer/Test/Mftf/ActionGroup/AdminUpdateCustomerGroupActionGroup.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="AdminUpdateCustomerGroupByEmailActionGroup">
        <annotations>
            <description>Goes to the Admin Customers grid page. Filters the grid for the provided Email Address. Edits the Customer. Updates the Customer Group with the provided Customer Group. Clicks on Save.</description>
        </annotations>
        <arguments>
            <argument name="emailAddress"/>
            <argument name="customerGroup" type="string"/>
        </arguments>

        <amOnPage url="{{AdminCustomerPage.url}}" stepKey="goToCustomerPage01"/>

        <!-- Start of Action Group: searchAdminDataGridByKeyword -->
        <conditionalClick selector="{{AdminDataGridHeaderSection.clearFilters}}" dependentSelector="{{AdminDataGridHeaderSection.clearFilters}}" visible="true" stepKey="clickClearFilters0"/>
        <fillField selector="{{AdminDataGridHeaderSection.search}}" userInput="{{emailAddress}}" stepKey="fillKeywordSearchField01"/>
        <click selector="{{AdminDataGridHeaderSection.submitSearch}}" stepKey="clickKeywordSearch01"/>
        <waitForPageLoad stepKey="waitForPageLoad02"/>
        <!-- End of Action Group: searchAdminDataGridByKeyword -->

        <click selector="{{AdminGridRow.editByValue(emailAddress)}}" stepKey="clickOnCustomer01"/>
        <waitForPageLoad stepKey="waitForPageLoad03"/>

        <conditionalClick selector="{{AdminCustomerAccountInformationSection.accountInformationTab}}" dependentSelector="{{AdminCustomerAccountInformationSection.accountInformationTab}}" visible="true" stepKey="clickOnAccountInformation01"/>
        <waitForPageLoad stepKey="waitForPageLoad04"/>

        <click selector="{{AdminCustomerAccountInformationSection.group}}" stepKey="clickOnCustomerGroup01"/>
        <selectOption selector="{{AdminCustomerAccountInformationSection.group}}" userInput="{{customerGroup}}" stepKey="selectCustomerGroup01"/>

        <click selector="{{AdminMainActionsSection.save}}" stepKey="clickOnSave01"/>
        <waitForPageLoad stepKey="waitForPageLoad05"/>
    </actionGroup>
</actionGroups>