Any category can contain hyper local content. Content is chosen based on it proximity to an office, content that is closest is prioritised above other content in the category. For example if you have 100 articles in a category and 2 of these articles are located close (within the offices service area) they will be selected before the other 98 articles. If there aren't any items within the offices services area we then loo for Generic content within the expanded search area some 30 km. Failing this we then find content in the category that is not local. This process is repeated for each of your fallback categories. With Zenith and other this is likely now that all group content has been removed fro the categories used in the slot for the day.