FashionMag Pro provides facility to enable mega menu in the categories menu. Kindly refer Theme Navigations, for how to set up categories menu.

Once categories are activated in menu, go to Magazines > Magazine Category and set Mega Menu option on for the category for which you want to enable mega menu. If mega menu is activated for category, all child categories within that category will be displayed on left in menu and on right side latest four articles from that category will be displayed with image and title.