This doesn't look like my dashboard.
Force Platform
- Click on Navigation on the left hand menu
 - If you need to create a new menu item follow the steps in this tutorial
 - First determine which main menu item you want the drop down menu to appear under
 - Hover your mouse over the 6 dots icon to the left of the page you want to place in the drop down menu
 - Click and Hold your mouse on the 6 dots icon. Then drag the page underneath the main menu item and release
 - Click and Hold your mouse on the 6 dots icon. Then drag the page slightly right and release to make the page a sub menu item
 - Repeat the process for the other pages to appear in the drop down menu
 - Press the Save button when you are finished