Custom taxonomies allows you create such notions for your posts as locations for example. Custom taxonomies can be created by one plugin without any PHP code.
- Install this plugin
- Create taxonomy you need on page: wp-admin/admin.php?page=cptui_manage_taxonomies
- Go to WOLF settings tab and using quick search find that new taxonomy by its name, activate it
- Save settings and manipulate with new taxonomy data directly in the Posts Editor and/or Bulk Edit operations forms