Mega Menu help

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So im developing a site that uses a mega menu.

The main menu has normal links, normal drop downs and the has a mega menu style drop down.

1. How would I get this to work in concrete5. Current menu is being done with AutoNav
2. Can I get each part of the mega menu to show only pages that use specific templates

The HTML of the menu would be something like :

<ul>
      <li>Page</li>
      <li>Page with dropdown
         <ul>
            <li>Sub page</li>
         </ul>
      </li>
      <li>Mega Menu Drop Down
         <div class="mega-menu-wrap">
            <div class="left section">
               <ul>
                  <li>Sub page</li>
               </ul>
            </div>
            <div class="middle section">


See the attached image of what the menu is supposed to look like.

1 Attachment