I have some pages on a Wordrpress site as www.example.com/title-of-the-page
For my SEO activities I would like to add a prefix to those pages. They will be www.example.com/name-of-the-prefix/title-of-the-page
They are some dozens, so I would like to do it only on some pages, not to all pages of the site.
I would like to rewrite them all at once, not one by one, and I need to know how to do it from the file htaccess or somehow else.