woo commerce product vendors

hi,
I am wondering if you could help me. I have WC product vendors on a site that has not launched yet. I want to restrict access to the site so that vendors can sign up, upload their products, but only see their shop and their products rathe than other vendors products (until the launch date). What settings could I use so that people uploading only see their own products (until the launch date). I am really hoping someone can point me in the right direction as I have asked woo experts and happiness engineers and it seems no one has a fix for this. Thank you.