Blog posts for your site
Your co-founder writes blog posts for your site when you ask for them. It does not write them on its own.
Asking for a post
Ask in chat, for example "write a blog post about what to expect at a first visit". Give the topic if you have one. If you don't, your co-founder picks one from what you've told it about your business and tells you which one it picked.
Blog posts help people find your business when they search. A post that answers a question your customers ask gives a search engine one more page to show them.
The one-time offer
Once your site is up and the search setup is done, your co-founder offers once to write a post. Tap Write a blog post to say yes, or No thanks to say no. If you say no, it does not offer again. You can still ask for a post at any time.
If your site already has posts your co-founder wrote earlier, you don't get this offer. You get a short note that it now writes posts only when you ask. The posts already on your site stay.
Your advice, not general advice
A post states a fact about how your work is done only when you told your co-founder that fact. This includes the order of steps, when to do something, and what is safe. If the topic needs your answer and you haven't given it, your co-founder asks you before it writes the post. Otherwise it leaves that point out of the post.
If a post gets your advice wrong, tell your co-founder what is correct, and ask for the post to be changed.
You approve every post
Nothing goes live on your site until you approve it. When a post is ready, you see it and decide whether it goes live. For more about approvals, see Approving website updates.