EPDM Category Search

We have setup categories for files per world area. Example of the categories would be; US Standard, US Special, EU MRO, EU Project, EU Quick Ship. I have a picture which shows an example of a file in the NA Standars category.

I am looking to see if there is a way to search files by category? I am unable to find a way to tie the category in an EPDM search card.

Also, is it possible to add a variable value for the caterogry? I would like to add the category field to a data card, but unsure how to add the variable.

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