How can I input grades?

Select "Grades" in the top menu. Select your course.

A table appears, with a list of students in your course. Type in the grade. If you want to input more grades at once, simply type them divided by a comma.

The grades you have just input will be marked with green color, press "Save grades" to save them to the server.

You can input a comment for each grade. How to attach a comment to the grade?

The grades can be sorted into columns based on the topic of the exam.
How to sort grades in Grade book - creating assignments in Grade book

The students and the parents receive a notification about a new grade.