What is the proper etiquette for using AI to help you write?

What is the proper etiquette for using AI to help you write? AI is a tool that I want to take advantage of, so yes, I use it in my writing, mostly because I have how-to books and novels that I want to finish that I probably could not finish in my lifetime without the help of AI. It makes brainstorming easier and the actual writing process less of a headache.

So, my question is, what's the proper etiquette for using AI in this capacity? Don't talk about it? Only use it for drafting? Only use it for brainstorming?