You create those requirements in the transcript editor (what you see when you log in to work on a transcript). Click on Settings at the very top of the transcript editor. This will open a drop down menu. Click on Subjects to open a new window where you can add subjects and required amount of credits for each subject. 

 

 

Scroll to the bottom to click Save Changes after each addition.  If you need to delete any item, be sure to click Save Changes after each deletion.