check the pic:

https://ibb.co/Q8YmqNX

Even when you defined 2 Portfolio Strategies (which are "different" from PortfolioStrategies elements which are symbols under a "Portfolio Strategy" { check the mouse highlighted text in the pic, for "Strategy 2" }), each with its own symbols, their index is unique:

Strategy 1:
symbol 0 = index 0
symbol 1 = index 1

Strategy 2:
symbol 0 = index 2
symbol 1 = index 3

A) There should be a function to detect that a symbol belongs to group "Strategy 2" rather than "Strategy 1".

B) There should be a way to create conditional relations between Strategy 1 and Strategy 2 such as, "if performance of Strategy 1 is X, then do Y within Strategy 2".

C) Within the MM Study, there should be a way to differentiate between Strategy 1 and Strategy 2.

D) Optimization: there should be a degree of independence between variables to be optimized for Strategy 1 and variables for Strategy 2 (a partial mesh, rather than a full mesh optimization approach).