Helee model/ VOF for multiphase flows

I’m working on a multiphase case with Palabos. As I have seen, it is possible to couple LBM with VOF for free surface flows. The model seems to solve only one flow, is there any reference or can anyone explain to me the model implemented in Palabos (for dam break for example) ?

The Lee-Lin model (free energy) is implemented in Palabos, can it be used for layered two flows for example ?

Best Regards,