Custom Slug for Posts

I’d like to add a slug of “news” before all of my blog posts. If I try and do this using the permalinks, it adds it to all posts (clients, employees, projects, etc.). I just want it for my blog posts. Is this possible?

This is more of a WP thing rather than a theme one. How about if you create a category and call it News, assign all your posts to that category and then choose to display the category in the slug from Permalinks? You could test with a few posts.