Make Navigation Item Click-only
You can make a navigation item only show or 'hold' a drop-down menu and not click through to any page:
1. Select Content
2. Select Add New Pages
3. Select Navigation Item
4. Select Add
5. Select the newly created Navigation Item content block
6. Select the Type field
7. Select Text (No link)
8. Change the text label, then go back to Content and add sub-navigation items under the block