@AngelaSolic -
It has been a long time since your post. Hopefully you discovered the solution on your own. I know it is possible to do it because my Institution does it. However, I am not an admin, so I cannot tell you how it is done. I'll tag @Chris_Hofer and he may have some ideas or @chriscas may have as well.
All I can do is point you to the admin guide page on grading schemes that mentions it, but does not really give all the details needed.
You may not be able to assign a specific grading scheme to all the courses in one college and not to another. However, on the institution level you can create all the possible grading schemes and make them available to everyone. Then with the proper naming, the instructors could find the one they want. Or someone in business may decide they like the grading scheme from engineering.
Ron