When testing the JUX News wall, I was trying out different options for the filtering, but I've run into several problems.
The main issue - when creating a JUX News Wall Pro module, I set up the module to display filters for the user, allowing them to select multiple categories and tags using the Checkbox option. Whilst selecting one category and one tag works (showing only articles from that category that include that tag). If you were to select a second tag, it would show also show articles with that tag, regardless of the category you selected (in addition to correctly showing the articles from the selected category and first tag).
I also have an issue with the Category and Category Depth options in the admin area - Category Depth does not seem to show any of the subcategories even with the limit raised.
Finally, the tag options shown to the user is displaying and option labeled ROOT, which is not an tag in the Joomla install.
The second and third issues can be worked around by selecting each individual tag and category manually, but this seems a rather rough solution.