Automatically Extend All Due Dates/Time Learning Accommodations Feature

If someone is consistently allowed extended time for assignments and tests (due to learning accommodations) I go into every assignment/test, one by one, in every course and extend their due date (or remove time limits from tests). I have about six students I do this for. It would be helpful if there was a way to go to a student's profile and select something that would "extend all due dates by x days". Thank you.