Editing Parent/Child Relationships through scripting? Should I be using Editor Scripting?

Hello, I am relatively new to Unity. I have been using GameObject.transform.Setparent() to reorganize the parent/child relationships in the object hierarchy. I tested the script using a UI button in Play Mode, and it works, however all of the parent/child relationships go back to their original state after I exit Play Mode.

How can I create a script to reorganize the object hierarchy in editor mode?

 

https://unity3d.com/learn/tutorials/topics/scripting/introduction-editor-scripting

 

Thank you this was the solution.