<p>This plugin was developed because I have one blog with multiple authors who have<br />
their own categories. The users’ category access is administered by the Authors2Categories<br />
in Tools panel of the admin.</p>
<p>Select the user. Click on Edit User (Tools>Authors2Categories) and select the categories he/she<br />
are allowed to post to. Click on Save when you are done.</p>


Author2categories

This plugin was developed because I have one blog with multiple authors who have

andergmartins

Steve Burge

Kevin Behrens

PublishPress

ojopaul

<p><a href="https://publishpress.com/authors/" rel="nofollow ugc">PublishPress Authors</a> allows you to create, manage and display authors for all your WordPress content. The plugin provides author boxes that can display one author, coauthors, multiple authors or even guest authors. The boxes have the author bio, name, avatar, description and more. You can also place the author boxes in widgets, shortcodes and Gutenberg blocks.</p>
<p>Here are the some most important features of PublishPress Authors:</p>
<ul>
<li><strong>Author Boxes</strong>. As soon as you install PublishPress Authors, you’ll see an author box under every post. You can add all the profile details you need for each author.</li>
<li><strong>Multiple Authors</strong>. By default, WordPress only allows one author per post. PublishPress Authors allows you to add an unlimited number of authors to each post. This is very useful if you have a busy site and need to manage and give credit to coauthors.</li>
<li><strong>Guest Authors</strong>. You can create two types of Guest Authors. You can add authors to a new “Guest Author” user role, or add them without a connected account.</li>
<li><strong>Author Categories</strong>. Categorize your authors as Coauthors, Reviews, Editors, Photographers, and more.</li>
<li><strong>Author Fields</strong>. Customize the user details for each author with fields for social media, job details, and more.</li>
<li><strong>Author Lists</strong>. Create a custom display of all your authors. You can sort, order, and filter to show only the authors you want.</li>
<li><strong>Author Pages</strong>. Showcase the work of each individual author with customizable author pages where you decide which post information is displayed.</li>
</ul>
<h3>PublishPress Authors Pro</h3>
<blockquote>
<p><strong>Upgrade to Authors Pro</strong><br />
  This plugin is the free version of the PublishPress Authors plugin. The Pro version comes with all the features you need to create beautiful and useful author profiles. <a href="https://publishpress.com/authors" title="Authors Pro" rel="nofollow ugc">Click here to purchase the best premium WordPress author box plugin now!</a></p>
</blockquote>
<h3>Author Boxes</h3>
<p>PublishPress Authors gives you multiple ways to show author profiles. You can display authors under your content, in a widget, using shortcodes and more.</p>
<p>The Author Boxes feature in PublishPress Authors provides five default layouts. You can use these layouts, customize them or click “New Author Box” and create your own layouts.</p>
<p><a href="https://publishpress.com/knowledge-base/customize-author-boxes/" rel="nofollow ugc">Click here to see how to customize author boxes</a>.</p>
<p>On the frontend of your site. PublishPress Authors gives you several different options to display the authors’ box:</p>
<ul>
<li>Replacing the default author display.</li>
<li>At the bottom of your content.</li>
<li>In a widget or a Gutenberg block.</li>
<li>Using shortcodes.</li>
<li>Adding filters and actions in your template files.</li>
</ul>
<p><a href="https://publishpress.com/knowledge-base/display-multiple-authors/" rel="nofollow ugc">Click here to read about displaying authors</a>.</p>
<h3>Multiple Authors</h3>
<p>With PublishPress Authors, you can set multiple authors for each post. When you write a post, you’ll see a box in the right sidebar. Here you can choose from all the users on your site, and assign them as coauthors.</p>
<p><a href="https://publishpress.com/knowledge-base/authors-getting-started/" rel="nofollow ugc">Click here to get started with PublishPress Authors</a>.</p>
<h3>Guest Authors</h3>
<p>Using PublishPress Authors, you can create Guest Authors who don’t need an account on your site. PublishPress will treat Guest Authors identically to Authors who are linked users.</p>
<p>You will be able to select and display Guest Authors in exactly the same way as for registered users. Each Guest Author can have a full profile, plus an avatar, and their own archive page for blog posts.</p>
<p>You can create two types of Guest Authors. You can add authors to a new “Guest Author” user role, or add them without a connected account.</p>
<p><a href="https://publishpress.com/knowledge-base/add-guest-authors-wordpress/" rel="nofollow ugc">Click here to see how to create Guest Authors</a>.</p>
<h3>Author Categories</h3>
<p>Author Categories is a feature that allows you to have different types of authors for WordPress post. For example, you can label one user as an “Author”, one as “Contributor” and one as an “Editor”. This enables you to give different types of credit to the all the people who work on your content.</p>
<p>PublishPress Authors Pro has a feature that allows you do more with Author Categories. You can create an “Author Categories Box”. This is a display format for your images that is specifically designed to group authors together in their categories.</p>
<p><a href="https://publishpress.com/knowledge-base/introduction-to-author-categories/" rel="nofollow ugc">Click here to see how to use Author Categories</a>.</p>
<h3>Author Fields</h3>
<p>PublishPress Authors allows you to customize the user details for each author. This is possible with the “Author Fields” feature. These fields can be displayed using the Author Boxes feature. There are several fields available in the Free version of the Authors plugin including First Name, Last Name, Email, Website, Job Title.</p>
<p><a href="https://publishpress.com/knowledge-base/field-types-ma/" rel="nofollow ugc">Click here to see how to use Author Fields</a></p>
<h3>Author Lists</h3>
<p>The Author Lists feature allows you to show a custom display of authors. For example, the “Author Index” view can organize your authors alphabetically. There will be a row of letters on the top of this display. If you click on any of the letters, you’ll be able to drill down to view only the authors whose names begin with that letter. There’s also a “Author Recent” view that allows you to show your authors, together with their most recent posts.</p>
<p><a href="https://publishpress.com/knowledge-base/authors-list/" rel="nofollow ugc">Click here to see how to use Author Lists</a>.</p>
<h3>Author Pages</h3>
<p>PublishPress Authors can replace the default WordPress author pages. The URLs of the pages will not change, but you can customize the pages using the settings on this screen.</p>
<p>Your author page will appear with an author box on the top of the screen and the author’s posts underneath. You can choose a “List” or a “Grid” option and you’re also free to create your own layouts.</p>
<p><a href="https://publishpress.com/knowledge-base/author-pages/" rel="nofollow ugc">Click here to see how to use Author Pages</a>.</p>
<h3>Custom Fields for Author Profiles (Pro version)</h3>
<p>PublishPress Authors Pro enables you to create author fields and enhance your author profiles. You can add Text, WYSIWYG, Link and email address fields. Then you can place those author fields in author bio profiles using custom layouts. The Pro version of Authors supports Facebook, Twitter, Instagram, Linkedin, YouTube, TikTok and more.</p>
<p><a href="https://publishpress.com/knowledge-base/custom-fields/" rel="nofollow ugc">Click here to see how to use Custom Fields</a>.</p>
<h3>Join PublishPress and get the Pro plugins</h3>
<p>The Pro versions of the PublishPress plugins are well worth your investment. The Pro versions have extra features and faster support. <a href="https://publishpress.com/pricing/" rel="nofollow ugc">Click here to join PublishPress</a>.</p>
<p>Join PublishPress and you’ll get access to these ten Pro plugins:</p>
<ul>
<li><a href="https://publishpress.com/authors" rel="nofollow ugc">PublishPress Authors Pro</a> allows you to add multiple authors and guest authors to WordPress posts.</li>
<li><a href="https://publishpress.com/blocks" rel="nofollow ugc">PublishPress Blocks Pro</a> has everything you need to build professional websites with the WordPress block editor.</li>
<li><a href="https://publishpress.com/capabilities" rel="nofollow ugc">PublishPress Capabilities Pro</a> is the plugin to manage your WordPress user roles, permissions, and capabilities.</li>
<li><a href="https://publishpress.com/checklists" rel="nofollow ugc">PublishPress Checklists Pro</a> enables you to define tasks that must be completed before content is published.</li>
<li><a href="https://publishpress.com/future" rel="nofollow ugc">PublishPress Future Pro</a> is the plugin for managing and scheduling WordPress content.</li>
<li><a href="https://publishpress.com/permissions" rel="nofollow ugc">PublishPress Permissions Pro</a>  is the plugin for advanced WordPress permissions.</li>
<li><a href="https://publishpress.com/publishpress" rel="nofollow ugc">PublishPress Planner Pro</a> is the plugin for managing and scheduling WordPress content.</li>
<li><a href="https://publishpress.com/revisions" rel="nofollow ugc">PublishPress Revisions Pro</a> allows you to update your published pages with teamwork and precision.</li>
<li><a href="https://publishpress.com/series" rel="nofollow ugc">PublishPress Series Pro</a> enables you to group content together into a series.</li>
<li><a href="https://publishpress.com/series" rel="nofollow ugc">PublishPress Statuses Pro</a> enables you to create additional publishing steps for your posts.</li>
</ul>
<p>Together, these plugins are a suite of powerful publishing tools for WordPress. If you need to create a professional workflow in WordPress, with moderation, revisions, permissions and more… then you should try PublishPress.</p>
<h4>Bug Reports</h4>
<p>Bug reports for PublishPress Authors are welcomed in our <a href="https://github.com/publishpress/publishpress-authors" rel="nofollow ugc">repository on GitHub</a>. Please note that GitHub is not a support forum, and that issues that aren’t properly qualified as bugs will be closed.</p>
<h4>Thank You</h4>
<p>This plugin is partly based on Co-Authors Plus, which includes the work of batmoo, danielbachhuber and automattic. This plugin also uses work from the Bylines plugin by danielbachhuber.</p>


Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors


I wish I could add different text in a box under a post and on autor's page. Hope it'll be added sometime in future.


works fine

PublishPress Authors is the best plugin for adding authors, co-authors, multiple authors and guest authors to WordPress posts.

Author2categories vs Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors