To empty a category:
1. Navigate to Components-> .Mighty Resources-> Sections in the Joomla global menu. The Sections page appears and displays a list of existing sections.
2. Click the Categories link corresponding to the section whose category you want to empty. The Categories page appears and displays a list of existing categories.
3. Select the check box corresponding to the category you want to empty and click the Empty button  in the toolbar, as shown in the following figure:
The selected category is emptied. In this scenario, the Records column becomes 0 corresponding to the Houses category.
Records refer to the number of contents or articles being associated with a with a section/category.