I run a website with a number of different people contributing to it. I woud like to have the author appear in each post rather than have Wordpress display the posted by stuff on the top of the post. More or less, I found the way to do this, or rather: I know what to read about and look for in order to make the proper changes.
This is not the problem. The problem is that WP, in order to set up a user as an author demand their email-address. This is not very practical, since I do not want the contributors to be authors in the WP sense of the word. And I do not want to bother them for emails. What I want is really the ability to create as list of authors along with the biographical info, and have WP to put on the relevant post. It seems like overkill to create a user profile for each one of them.
Or is there a way to manually
The Advanced Custom Fields plugin would be helpful in doing this.
I am not sure there is a plugin that does exactly what you are asking, though. Most of the enhanced author display plugins that I know of do require the author be a registered WordPress user.