Implicitly derived parameters are defined in the $LDDerivedParametersB record. In case of the numerical value any driving variable is to be changed, the constraint equations, that defines the derived variables, should be recalculated. The equations are solved with the FindRoot function. The initial guesses of the unknown variables ( these are the derived parameters ) are the actual values of the parameters. To override these initial guesses the ParameterInitialGuess option should be used.
Changing the initial guesses of the derived parameters one can enumerate different solution branches of the loop closing equations.