short code

Once the shortcode is placed in the page content editor it will replace the whole content of the page. It basically works as a page template but since we can’t add it to the theme that is the only way to do it.

Is this what you were looking for? Although this solution uses templates instead of shortcodes.
https://www.ads-software.com/support/topic/heres-how-to-show-x-latest-portfolio-entries-on-any-page?replies=9#post-5889190