I wonder if there is any plugin to change the mode of choice of parent categories and children categories of the area to publish a new post: wp-admin/post-new.php
I wanted to change the way the checkbox to select, for example:
Select the parent category: List of parent categories
Select the children category: List of child categories, for selected parent category (it should be loaded in ajax when change the parent category)
So, I let my columnists select only one parent category and only one children category, and leave these fields as required.
I have to edit many posts that does not have at least category (Uncategorized) or that appear in more than one parent category (and this causes bugs in the layout, especially the menu highlighting).
Now appreciate all kinds of help. If there is a plugin on it, is easier, but if not (because I seek not found), and some methods to describe someone like me can do that I also thank.