Sometimes Learners pass courses in different ways: some pass better, some worse, so you have an opportunity to customize your certificates to each type of them and make how many grades you need
To set up certificates and grades click on the course settings and open the "Certificates and Grades" page. There you can activate the function of receiving the certificate and also make grades
Each grade you can design by yourself: you can custom the temple of different grades with different scores, chose the name of the grade and their amount
To see what your certificate looks like, go to Learners side and choose in the profile menu "Certificates" button