Dropdown list when pressing a button

Dear B4A users,

I'm new to B4A and I'm currently looking to find a way to have a dropdown menu when you press a button.

Kind of like this:


But then when I press this button on my titlebar:


My titlebar looks like this:


Note: This is a project for school me and some classmates are working on and it's deciding on passing our year. We bought B4A just for this.

Sincerely,
SCIS.