Setting up Markbook

So I have Created three grade types: 1st CA (20%), 2CA (20%) and Exam(60%), all summing up to a final score. The final Grade is to be interpreted in this range of grades (75-100 : A, 70-75 : B2, 65-69:B3, 60-64: C4 etc). How do I go about setting this up as a grade scale of the final score?

Please, I need this urgently? thank you

Hello, you can add grade scales by going to Admin > School Admin > Manage Grade Scales. I am not sure this will do exactly what you want (we may be using different terminology here), but please let us know if you need any further assistance. Thanks, Ross.