How to make a dropdown list in a menu item?

Question

MODX

I can not quite understand how to implement this using pdoMenu. There is a horizontal menu , it is displayed through pdoMenu just. I need that when I hover over "About the company", a list of three menu sub-items will drop out. I created them in the parent. It has id = 6 . Now, if I add it to parents, then the whole menu collapses, becomes inactive, and those three items, on the contrary, are displayed and active

Answer 1

An example of a 2-level menu from Uikit 2 .