Stuck with creating dialogue system UI

I’m not very experienced when it comes to creating UI, and currently I’m trying to demo a layout that I think would fit my project best, the issue being that I’m just not sure how to go about creating it. The idea is that upon the player clicking on one of the “Dialogue Options” it would open a separate drop-down menu that would list more specific examples. The below example format is a skeleton of how I ideally want it to look, with each option in the larger box changing the prompts in the smaller box, but not the smaller boxes’ size, but I’m unsure of how to make it actually functional.

If you have any suggestions for me I’ll gladly hear them.

I’ll save you the complicated process of doing this properly since I assume you just want to get this done.

The issue here is the desired size of your widgets. You want it to be unchanging. You can achieve this in a few ways but the simplest is to wrap (place inside of) your 2nd box in a container widget (border is an easy one) and set that container widget to not size itself to its contents.

I hope that helps.

If you have the complicated process at hand I’ll gladly hear it, I want to learn more about this software, what it is I’m actually doing in it and how to do things on my own.