Is this possible?

[Frankie]

I'm making a little add/remove system for my events team admin. I'm doing it with gui scripts. I have a textlist box that lists all the ETs from a text file (or I will soon, I have not made it yet) and I was wondering if I could have a popup menu within the textlist. As in, you right click one of the accounts on the list, and a popup with a remove button will appear, click, and bam. removed.

Kind of like how the addcustommenuentry works with the scripted playerlist, but I'm not sure how to do it with GUIs, unless it's the same? I haven't tried yet and thought I would come here and get some feedback.