A way to combine all of my team's boards in one place

Hi everyone,

So our IT team currently has boards for different categories (break/fix, change, service request, etc.) and I’d like to make a high-level board where we show everything that our team has been assigned to in one place. I tried the dashboard widget, but honestly, I don’t like that I can’t group things the way I need to and it looks like a big mess with groups from four different boards.

Is there a way to make a board that shows all of our tickets and I can group it by the assignee? We haven’t rolled ou Monday yet, but I know our team will not like it if we don’t have this.