Based on the number of subjects you add to the course you can update the grading weightage.

Proficiency score: Score required to prove mastery in the subject.This will be used to generate the student proficiency chart (specify value between 25% and 100%).

Weightage: The overall weightage of each weightage of each subject as a percentage. Must add up to 100.

If you enable the Show letter grades for all subjects option, grades assigned will be shown as letters to each student rather than marks in percentage(%). If you want the grades to be presented in percentage to every student, disable this option.

Once you have enabled this setting, click on the edit icon to Edit the grades and marks in percentage. Click on the +Add letter link to add more grades.

Mark type in report card: Based on the option you select either letter grades or both letter grades and their respective percentage assigned to the letters will be shown in the report card.

Click on the Save button once all the necessary changes are made.