How do I remove old backup sets in NOBU?

I have months of old backup data that I don't need and my storage quota is being compromised. Is there an easy way to delete old files - by backup date/version would be nice :) Not sure how to individually delete files from a specific backup set - it seems like the options are only by file name?? Am I looking in the wrong place?

Thanks you!!

I have months of old backup data that I don't need and my storage quota is being compromised. Is there an easy way to delete old files - by backup date/version would be nice :) Not sure how to individually delete files from a specific backup set - it seems like the options are only by file name?? Am I looking in the wrong place?

Thanks you!!