New here. Some questions if you may.

[VanillaMochaBear]

I am in the last 4 weeks of my class and I happened to have a project due tomorrow that I wished I payed attention in class for. Anyways what my first questions is working the list box. What I'm trying to do is control ,among ten different buttons, which index an item get assigned to and it will stay in order no matter what and how to make it replace the space index place when the same button is clicked again.