Choose Gradebook > Entry from the menu buttons. This screen shows entry column for a quiz.
Enter scores individually within grade field. Return/enter to move down the column to the next student.
Change publishing status by clicking the oval at the top of the column. Click once to shade left and publish the item, click again to shade the whole oval and publish the scores, click again to return to no publishing.
Click to enter the same grade for all students or to clear all grades entered for the assignment (useful if you wish to delete the assignment).