Hi @probinson1,
I don't know of a way to do that with either the original rubrics or the rubrics redesign that's currently in preview (and you appear to be using from your screenshot). I'm going to move this post over to the rubric redesign area of the community so this could get some visibility there. You could also submit this to the feature idea area for official consideration by Instructure at some point in the future.
You could also ask your local Canvas team (usually in the eLearning / IT / Digital Education areas) about creating a custom script for this if it would be something most or all teachers at your school/institution would like. I think it might be a relatively easy thing to script as a customization, but I can't guarantee that your team would want to go that direction.
Hope the info helps, even if it's not exactly what you were hoping to hear.
-Chris