Tutorial needed for an old school dialog/fluff box like they've done in Wasteland 2.

I'm looking to add a text box that scrolls similarly to what you see in old Ultima games, or more recently Wasteland 2. But I'm just not finding any tutorials on how to do this, and apparently can't even get the right words to know what to ask Google to find the right help.

My money is on a scroll rect and some text boxes, but I'd need it to grow dynamically, and honestly, I'm just running into walls with the scroll rect where it's never quite working.

Any help is appreciated, thanks in advance.