How to modify space tools apps section


In my project I am looking to modify the Space Tools -> Apps section. My goal is to create a new tab and a corresponding area underneath, similar to the Overview tab. I have figured out how to add a new tab/link in the same space as the Overview tab. However, I am stuck on how to develop a corresponding space underneath. I essentially would like to keep the same look and style that the apps section has, while providing my own information.