1. Initiating a post/item type change

In b2evolution 6.6+, changing the type of a post has important consequence, since each Post Type can have a different behavior as well as different fields.

There are several ways to initiate a post type change:

While editing a post

Either click on the post type in the first panel title, or click on the "Change type" action icon:

While viewing the post list

Click on the post type in the "Type" column:

2. Select a new post type

On this screen you can simply click on the new desired post type in order to apply it to the previously selected post: