Stop author pages from appearing in Google?

Hello, I noticed when I google “myusername” which I have been using on multiple clients’ pages build with enfold and other themes, the results will show stuff like examplesite.com/author/user, “user” being my admin user name on the site. Please see private content.

I know Yoast has a feature to check “Do not allow search engines to show this author’s archives in search results.” on user options, but that hasn’t hidden them yet…