How do I show a submenu when hovering over a menu item? I have a Drupal 7 site. I need to create menu and sub-menu. I am using the Mega Menu module for this.

This is my menu structure.



Sub-menu not showing up when hovering over a menu item.
Mega Menu module will create a Block in Blocks section(admin/structure/block).

Enable that block in a particular region and see it in action.