“Xpert” stands for “X-number of posts Per Taxonomy”.
For example, Xpert Slider displays 1 post per category, which is a great way to showcase the variety of your site’s content.
You can include/exclude terms. For example, if you have 5 categories, you could display 3 posts from 4 of those 5 categories, for a total of 12 slides instead of 15.
It also works with tags and custom taxonomies, for which you might want to use the (new as of DMS v2.1.9) [ post_tags ] shortcode in the section’s “Third Line Content” option.
For example: [ post_terms tax=”my_cpt_category” before=”Filed in: ” ]
Here are screenshots of the section’s options as of its initial release: