Hello. This plugin does not use shortcodes.
The main goal is to avoid so much time without new posts (you can specify the allowed time without new posts).
What this plugin does is to automatically change the post_date (and the post_modified if you want) of the oldest post that match with your category selection.
So the oldest post becomes the newest, as if it had just published.
I hope this helps.
Anyway, thank you for your interest.
