Editing the news/blog article/post template will impact all articles/posts.
You can edit the layout of your news articles by editing the ‘Themer Layout’.
1. Click 'Page Builder'.
2. Click 'Themer Layouts'
3. Select the page template you want to edit. The name of the template may vary, but it usually has the word ‘Single’. It also is a ‘Singular’ type.
You can edit this template using the page builder. You can add dynamic content that feeds from the article by using shortcodes. See this document for more info on shortcodes.
Once you are happy with the changes, publish it and clear the cache.
Please note, all changes to the template will impact all articles!