Admins can insert posts during the review phase (after scoring).
In Curation Assistant, look for the following option beneath Issue settings:
Click on "Add a post for scoring directly", which will give you the following dialog:
Insert the post ID and click Add.
Note: If you regularly insert posts, we recommend enabling real-time indexing in the Threadloom plug-in in your forum software admin control panel. You can read more about this option in this article.