Is there a mega menu or extended menu option in Salient themeforest?

Hi there, I’m using Salient themeforest on Wordpress and I cannot figure out how to enable the wordpress ‘extended menu’ or mega menu option so that I can display my drop-down menu in columns (as per this forum explains

I’m wondering if the Salient theme provides this? Also, I haven’t updated our Salient theme for awhile. How do I do this?

Help much appreciated!