test completed, some questions...

Pier I'm new to Joomla but if I understand what you are asking that's how its supposed to be its telling you its a sub category just like a menu item.

If you want one line you need to make all categories root

Hi,
Please pay attention in parent category. Bellow is the category tree

parent category
- subcategory level 1
- - sub category level 2
- - - sub category level 3
- - - sub category level 3
- - sub category level 2
- - - sub category level 3
- - - sub category level 3
- subcategory level 1
- - sub category level 2
- - - sub category level 3
- - - sub category level 3
- - sub category level 2
- - - sub category level 3
- - - sub category level 3

Above relation depend on your selection when you modify category in backend of OS Property.
Thanks & and thank you Alan for your explanation
Dam