How To a Create a Multilevel Drop Down Menu for Products on the Main Menu

Hi Clever Corpo Peeps,
I am trying to create a a multilevel drop down menu within the Main Menu to showcase my products.
From what I can understand, I can only add my pages to the main menu but what I really want to do is add the word “Products” to the main menu and when someone hovers over the word, a drop down menu appears with all the pages for my products.
Can someone please advise me how I can do this.
Thanks for taking the time to read this and thanks in advance if you can help me ??