메뉴바 하위카테고리 만들수있는방법? 채택완료

그누보드기반에서 템플릿을 적용하여 홈페이지제작중에있는데요...

메뉴이하 하위카테고리가 없는템플릿인지.. 모르는것인지,,

메뉴에서 >>제품현황에 하위 카테고리 만들수있는방법 부탁드립니다.

<!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav navbar-right">
                <li class="page-scroll">
                    <a href="<?php echo G5_BBS_URL?>/content.php?co_id=service" class="<?php echo $co_id == 'service' ? 'active' : ''?>">회사소개</a>
                </li>
                <li class="page-scroll">
                    <a href="<?php echo G5_BBS_URL?>/content.php?co_id=SCHEDULE" class="<?php echo $co_id == 'SCHEDULE' ? 'active' : ''?>">설비현황</a>
                </li>
                <li class="page-scroll">
                    <a href="<?php echo G5_BBS_URL?>/content.php?co_id=teachers" class="<?php echo $co_id == 'teachers' ? 'active' : ''?>">화장품용기</a>
                </li>
                <li class="page-scroll">
                    <a href="<?php echo G5_BBS_URL?>/board.php?bo_table=gallery" class="<?php echo $bo_table == 'gallery' ? 'active' : ''?>">제품현황</a>
                </li>
                <li class="page-scroll">
                    <a href="<?php echo G5_BBS_URL?>/board.php?bo_table=gallery" class="<?php echo $bo_table == 'gallery' ? 'active' : ''?>">제품현황</a>
                </li>
                <li class="page-scroll">
                    <a href="<?php echo G5_BBS_URL?>/board.php?bo_table=board" class="<?php echo $bo_table == 'board' ? 'active' : ''?>">고객센터</a>
                </li>
                <li class="page-scroll">
                    <a href="http://www.bareumcos.com/index_en.php"?>English</a">http://www.bareumcos.com/index_en.php"?>English</a>
                </li>