I think I already know that this isn't' possible but looking for a work around or a genius solution.
We have a course with 98 career mentors - they were added as TA's after the course was published and students started submitting assignments. Now all 98 are getting notifications when any of the others accept the course invite. I have shared directions on how to change their individual notification preferences, but would like to shut off notifications for that TA role. Any thoughts?