Edit asset from AutoVrtlEnv project


For a project I am using Matlab and Unreal Engine to create a custom scene to perform test in. I have managed to figure out how to edit the existing scenes that are in the project file. And the next step is to edit the actors. I don’t need the complex cars that are in there now, I just want a simple block that is able to move and have sensors attached to it.

So my question is how do I edit the actors to look like a simple white block while still having the sensors attached to it so that I can use it in my simulation?