Adding a commentary column to pivot table

Is it possible to add for every sum in pivot table corresponding "What" column, but do not sort or categorize or summarize by it?

I have a table with this data

And I created a pivot table out of it with rows category and subcategory to get a sum of expenses for every category and category+subcategory. It worked well.

But I also want to see what kind of expense that was.

Is it possible to add for every sum corresponding "What" column, but do not sort or categorize or summarize by it? Just add as a commentary, so I could understand what kind of expense was it.