How to automate process from an extension?

Hello everyone, newbie on Unity Code, I have this extension, I need to automate those 3 steps in one single click, how can I do that?

me image

Find the script that defined these items, they are static methods tagged with the [MenuItem] attribute. You can then simply call these three methods in sequence provided they and the class they are defined in are public. If not public, either edit the code or access them via reflection (examples on stackoverflow).