This ticket is part of the EPIC T383055
**Background**
The Commons categorization principle suggest that: "The page (file, category) should be put in the most specific category/categories that fit(s) the page (not directly to its parent categories)"
However, the current categories field in the upload wizard does not facilitate that. This ticket is to allow users to navigate to subcategories thereby allowing them to discover and choose more specific category in the autocomplete list.
**Scope**
The scope of this ticket is to
- make parent categories in the current autocomplete list traversable i.e. users can click on them see subcategories.
- once in the subcategory users can go back to its parents category
Not included in this ticket
- Showing a full list of sub categories would require additional interactions such as adding the ability to scroll within autocomplete list which will be covered in a separate ticket - T383721
**Concepts**
{F58196382}
{F58196383}