Drop-down menu for nav bar

Themes
1

Hi team,

I’ve been looking for a beginner’s guide on how to install a drop-down menu for the main nav bar, to look like this:

image

Any idea where I can find it?

Thanks,
Alfonso

2

I did it using the main Navigation menu and entering the hierarchy like this

-Projects

-Projects–Commercials

-Projects–Films

-Projects–Music Videos

Using the MONO v1.2.5 Theme by Kusa Projects.