How to have 6 Mastery Levels when your Account is set for 4 Mastery Levels?

[Hildi_Pardo]

Our Elementary Sub Account is set with a Mastery Scale of FOUR Mastery levels:

1. Insufficient Evidence
2. Developing
3. Approaching
4. Meets

However, we have a special project with our Office of English Language Learners who would like to use the WIDA Levels of language proficiency -- and I was hoping to be able to add those levels as outcomes -- but there is SIX proficiency levels.

I don't see a way to create these as Outcomes since there isn't a way to have a different mastery scale (unless I change it for the entire subaccount, which we cannot do).

Does anyone have creative solutions for this?  Or is there something we are missing that would allow more flexibility for this?