Use the same HubPress instance with multiple authors by adding contributors to the repo in which HubPress is hosted.
The first person to create a blog post is credited as the writer. Edits by other contributors are attributed to the first person who created the post.
Changes to general settings do not affect the author data attributed to each post.
Open your HubPress site on GitHub.
Add the GitHub users for which you want to grant access to your blog.
When you add contributors, they are notified by the GitHub notification system. Once they accept the invitation, they can collaborate with you on content development for the blog.