Almost any entered information may be changed at any time. The only thing you cannot do later is change the form of grading. This is because I don't know what to do with the assignments already recorded in the sub-subject.
You are allowed at any time to change the student's assignment grade, the weight of the assignment, the weight of the sub-subject, the point value of an assignment, the name of the assignment, the name of the sub-subject, the student's name, delete an assignment, etc.
To change any cell in a spreadsheet, simply click on the cell to highlight it. Then enter the new data and press the return key. If the new data is not allowed (like in a wrong grade type for the assignment) the Gradeßook program will inform you and the cell will revert to its last value.
