Readarr/src/UI/Settings/MediaManagement/Sorting/ViewTemplate.html

<fieldset class="advanced-setting">
    <legend>Folders</legend>

    <div class="control-group">
        <label class="control-label">Create empty series folders</label>

        <div class="controls">
            <label class="checkbox toggle well">
                <input type="checkbox" name="createEmptySeriesFolders"/>

                <p>
                    <span>Yes</span>
                    <span>No</span>
                </p>

                <div class="btn btn-primary slide-button"/>
            </label>

            <span class="help-inline-checkbox">
                <i class="icon-question-sign" title="Create missing series folders during disk scan"/>
            </span>
        </div>
    </div>
</fieldset>