Adding fluids to Energy Equation Solver (EES)

Fluidman117

Hello fellow science enthusiasts!

I am working on a Kalina cycle for a geothermal powerplant and would like to graph some T-s and H-s diagrams and also do some calculations. I am using the program Energy Equation Solver. The fluid I am interested is ammonia-water mixture, but theres no information on it in the program, is there a way I can add this fluid mixture to the EES?

Regards,
Fluidman 117