In Narratium, in addition to indicating an author for your posts as is normally done, you can also define a series of co-authors for posts that have been created with the collaboration of different authors, this way on the page will appear these co-authors next to the name of the main author. In addition the posts will appear in the author profiles of both the main author and any of the co-authors.

To indicate one or more co-authors for a post you just have to find the author you want to add as a co-author in the dropdown that appears inside the metabox titled “co-authors” on the post editing page. In this dropdown will appear all the authors that are registered in the site.