ClickHouse/tests/integration/test_config_substitutions/configs/include_from_source.xml

<clickhouse>
    <mqs>99999</mqs>

    <users_1>
        <user_1>
            <password></password>
            <profile>default</profile>
        </user_1>
    </users_1>

    <users_2>
        <user_2>
            <password></password>
            <profile>default</profile>
        </user_2>
    </users_2>
</clickhouse>