Creating an interactive computer terminal shell

Hi, so I am quite new to this engine so still learning the basics, I have been going through this course to give an overview of my experience so far

https://www.udemy.com/course/unreal-engine-5-the-ultimate-game-developer-course/

So my question is I was looking some high level suggestions to replicate this tutorial that is done in unity

The goal was to create an interactive computer in a world which would have an interactive terminal with set commands as shown in that video. I understand it can be done through using a material with the blend mode set to UI to create the initial terminal itself but I have not found any resources that could point me in the right direction to create what I want. Any help would be appreciated.

I am ideally looking to build a setup where any input commands would be fed through an C++ interpreter class and I would create the logic there on how to respond to those inputs and feed the relevant text back.