How do you get WP Core Conversions Plugin to work?

Hey does anyone know how to get it to work? I downloaded it, uploaded in the plugins folder, everything as far as how to set it up shows but then it does not do anything. I updated it, and also downloaded WP Super Cache because I saw someone say it works. I wanted to ask just in case anyone else knew how to get it to work. Thanks

After you activate plugin just for instance go to add new post or edit existing post and 3/4 of the way down thepage you will see a tickbox saying enable lightbox.In this box you enter the alternative url you would like to be shown over the original post.So the idea in the long term is that you write a popular post and then you use that popularity to draw attention to your alternative post or product.

Thanks I did that but it does not work. At what point should the box pop up?

after you have put url in the box when someone clicks on the url of your post the url you put in the core conversion box will appear first