Sometimes grades aren't able to be automatically calculated by Totara, they may require some manual adjustments for borderline grades.
To manually change a grade:
|You can change the course total mark and the component marks remain unaltered.|
The Totara Academy has a whole course dedicated to using Grading, completion and certificates in Totara Learn. Here you can learn more on how to use these tools, see best practice, and give it a go yourself.