All template files are located in ui/theme/default/ folder.
Please note that, after editing template files directly from here will be replaced when you update. You can do this, if you think you are heavily customizing & you do not want to update.
Admin Layout File-
Admin layout template file is located in- ui/theme/default/layouts/admin.tpl
Sample codes from Admin layout-
{if has_access($user->roleid,'orders') && ($config['orders'])}
{if ($config['orders'] eq '1')}
<li class="{if $_application_menu eq 'orders'}active{/if}">
<a href="#"><i class="fa fa-server"></i> <span class="nav-label">{$_L['Orders']}</span><span class="fa arrow"></span></a>
<ul class="nav nav-second-level">
<li><a href="{$_url}orders/list/">{$_L['List All Orders']}</a></li>
<li><a href="{$_url}orders/add/">{$_L['Add New Order']}</a></li>
</ul>
</li>
{/if}
{/if}Client Portal Layout File-
Admin layout template file is located in- ui/theme/default/layouts/client.tpl
Sample codes from Client Layout-
{if ($config['orders'] eq '1')}
<li {if $_application_menu eq 'orders'}class="active"{/if}><a href="#"><i class="fa fa-server"></i> <span class="nav-label">{$_L['Orders']}</span><span class="fa arrow"></span></a>
<ul class="nav nav-second-level">
<li><a href="{$_url}client/orders/" >{$_L['My Orders']}</a></li>
<li><a href="{$_url}client/new-order/" >{$_L['Place New Order']}</a></li>
</ul>
</li>
{/if}By editing those files, you will be able to add / modify / reorder / remove navigation items.