Collections Items Editor Question

In the Collections Items Editor
I see the Name, then Status, Created, Modified, Published
is there a way to add another item in the list.

What I need is to add a category to the list which is assigned
to the collection item.

Here is my public share link: LINK
(how to access public share link)

I found it… for some reason under the little pin only a small list was popping up.
Now the whole list of selections are showing up. To turn on and off.

Next I wish I could sort by two items… Like Category and Name.