add SMMA to MA Envelopes

[DaveSkender]

Description

Adding SMMA to MA Envelopes selection options.

To do:

• investigate options to reduce code complexity

Checklist

• My code follows the existing style, code structure, and naming taxonomy
• I have performed a self-review of my own code and included any verifying manual calculations
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings and running code analysis does not produce any issues
• I have added or updated unit tests that prove my fix is effective or that my feature works, and achieves sufficient code coverage
• I have added or run the performance tests that depict optimal execution times
• New and existing unit tests pass locally and in the build (below) with my changes

[github-actions]

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