Davinci Resolve: Put a video in a "container" window?

The best analogy I can think of is the youtube end screens - you have this box that is approximately 1/4 of the screen, and a video is scaled down to fit within that.

I have a few clips I want to run in my own custom version of that - is there an easy way I can make that work instead of trying to zoom them all out and position them accordingly? Additionally they are stabilized clips, so if I zoom them out those uneven edges would show.

If you google "davinci resolve picture in picture" you'll find lots of tutorials and whatnot.

Here's one: https://youtu.be/qibjk​yFoMho