Sonarr/UI/Settings/MediaManagement/Sorting/ViewTemplate.html

<fieldset>
    <legend>Sorting</legend>

    <!--TODO: Remove this and move it to Add Series-->
    <div class="control-group">
        <label class="control-label">Use Season Folder</label>

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

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

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

    <div class="control-group">
        <label class="control-label">Season Folder Format</label>

        <div class="controls">
            <input type="text" placeholder="Season %s" name="seasonFolderFormat"/>
            <span class="help-inline">
                <i class="icon-question-sign" title="How should season folders be named? (Use %0s to pad to two digits, %sn for Series Name)"/>
            </span>
        </div>
    </div>
</fieldset>