Modyfing a forcefield

Hello,

Right now we only have the forcefield module of Materials Studio, but we want also to have the Sorption module (we already bought it). We need to be able to edit the forcefield, but I just realized it is not possible to create a new forcefield file because we don't have the proper licence. I want to know if once we have installed the Sorption module we will be able to modify the forcefield parameters or we are stuck with the default forcefields (in that case this module is of no use to us)

Also, I have the same question regarding the Equilibria module.

Any information in this regard will be deeply appreciated.

Thanks!