Reports :: Call Center - Creating A Report To Show All Associates Under Error Type?

The database is to track and evaluate call center associate phone calls. I created yes/no fields for multiple common errors (accurate/complete, Security, and client experience. and under each are @ 20 common errors)

(the problem is that I did not create a seperate table for each main category which I think might have made things easier)

Now what I am trying to do is create a report that allows me to show (or select) an error and have it show all the associates that had that error in a given time frame.

I already have a report to show all associates and all the errors that each had in a certain time frame. (so vertically I have associate detail and horizontal I have error detail).

is there a way, without creating 25 separate reports, to show all associates under an error type?