A page should not be used as a top-level nav item with sub navigation items under it as a drop down. The system causes a bad user experience when this is done. Here's an explanation:
If you use a page as a top-level navigation item and also add pages below it to create a drop down underneath, that top level navigation item is no longer linked. The system creates a duplicate of that menu item under itself as a sub-navigation item and that one links out to the page. It looks like a mistake to users.
Solution:
Use a "Menu Item" for any top-level navigation that will have sub-navigation drop down associated with it. Call this item one thing and then add the pages you want in the subnav below it. That way there are no duplicates.
EXAMPLES:
Used a page as a main nav item with drop down
Resources
> Resources
> Vendor List
> Windermere Ready
> Buyer Capital
Used a menu item and put all pages as drop down options
Resources
> Buyer & Seller Resources
> Vendor List
>Windermere Ready
>Buyer Capital