I agree that installing multiple instances of cAlgo to test multiple accounts of multiple brokers need not interfere one with the other.

I agree somehow.

I need either the ability to change symbols of the chart using C# (I didn't find a way to do this using cAlgo, to change symbols 1 by 1, parsing all symbols), either the ability to use indicators for all symbols and get data from them (there wasn't a "symbol collection" to iterate for the account).

I have my own simulation which tests decisions based on indicators in MT4, and I want to be able to rewrite it for this platform.