B4J Question B4XPages - how to creat a drop down with the hamburger icon - for cross platform?

Hello all,

I am doing my first attempt at cross platform dev, Wanting to create an iOS and an Android app.

My newest task is to create a drop down menu, but I want to add the hamburger icon to it, with no text.

Can anyone give me an idea how to do this? I'm starting in B4J pages.

Thank you,
Tim