magento-test/app/code/Magento/Sales/Test/Mftf/ActionGroup/SelectCheckMoneyPaymentMethodActionGroup.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="SelectCheckMoneyPaymentMethodActionGroup">
        <annotations>
            <description>Selects the 'Check / Money Order' Payment Method on the Admin Create New Order page.</description>
        </annotations>

        <waitForElementVisible selector="{{AdminOrderFormPaymentSection.paymentBlock}}" stepKey="waitForPaymentOptions"/>
        <conditionalClick selector="{{AdminOrderFormPaymentSection.checkMoneyOption}}" dependentSelector="{{AdminOrderFormPaymentSection.checkMoneyOption}}" visible="true" stepKey="checkCheckMoneyOption"/>
    </actionGroup>
</actionGroups>