Codex running on Microsoft office Question:

Hi there,
I’ve been really excited with the possibilities of Codex, I’d like to replicate what’s done in this video from the openai youtube: Talking to Your Computer with OpenAI Codex - YouTube. But i’ve found no information about how to do that anywhere.
I know there are ways to implement an API in Microsoft word, but I think more work would be needed for it to work like in the video? Anyway, I’m not too knowledgeable on APIs and JS, any feedback would be appreciated.