Custom post type

How do I activate the Custom Post Type to be displayed on the link “More Posts”

From within the plugin, this isn’t something you can do. The More Posts link is simply what the WordPress get_author_posts_url API call returns, which in turn gives you the archive page URL for the post’s author in the form [blog URL]/author/[author name].

You can make a modified author template, preferably via a child theme, to do this, writing a custom WordPress Loop to bring in the custom post type that you require, rather than the usual default post post type.

Would it be possible to display thumbnails of the custom type (portfolios in my case) into the Biographia box?

You might be able to do this via the plugin’s wp_biographia_biography_box filter, appending the thumbnails the the Biography Box’s content, but you’d need to write some custom code to be able to do this.

Hope all of the above helps …

-Gary