Kyle Scheuerlein

Automatically turn all posts into excerpts of 300 characters and add a “Show More” link that will load directly in the page. If your post includes a picture, it will also obtain a thumbnail and place that at the beginning of the excerpt. Supports Infinite Scroll, too (assuming you manually enabled it on your P2 site)!
<ul>
<li>Shorter posts will be left alone, unless they have a picture</li>
<li>Posts with a picture will always be turned into a thumbnail/excerpt</li>
<li>Expanding or contracting a post will scroll to the top of the post</li>
</ul>
Planned:
<ul>
<li>Long posts with embedded video and no image include the video in the excerpt</li>
<li>Change the character length from the admin screen</li>
</ul>

Show More for P2

Works smoothly even on latest WordPress & Mercury child theme of P2.

Plug and play

Automatically turn all posts into excerpts of 300 characters and add a "Show More" link that will load directly in the page.

Ian Dunn

The <a href="https://wordpress.org/themes/p2" rel="ugc">P2</a> theme lets you quickly create posts from the front end, but by default it only allows you to tag them. This plugin lets adds a dropdown box to the post form so that you can also assign a category to the post.

P2 New Post Categories

Works nicely even on the "Mercury" child theme for P2 :)

Works!

Adds a dropdown menu of categories to the P2 new post form.

Show More for P2 vs P2 New Post Categories