I too am trying to include bonus (extra credit) column. I have created the column as directed in the recommended file. But a Note there says
"For a zero point assignment to factor into a student's grade, you must add at least one additional graded assignment with a positive point value. This additional assignment can be in any assignment group."
I do not understand what this means. By "additional" graded assignment, does this mean in ADDITION to the "extra credit" assignment? I did assign it a "positive point value" but when I enter any value in that column in the grade book, it does not seem to change the student's grade!