You will see a report card-like view. To alter values for a particular category in a specific period, move your cursor over the corresponding cell. Here you will see a popup that you can add or edit grades in. (see example below) Changes are applied immediately. You do, however, need to refresh the page for the score icons to update.
The first record displayed is an incident that was entered previously. The second record is a manually entered grade to improve this student's score in the Shows self-control category. Additional manual records can be added by clicking Add Record.