insert multispheres particle

Hi all,

I like to insert continuously multispheres particles into my LIGGGHTS run by defining is as a molecule, but I saw that the commands used by LAMMPS to do so are not the same in LIGGGHTS, so, I was asking myself, if I want the same command as LAMMPS, could it be enough to take the function in LAMMPS and then just change the function in LIGGGHTS (for example for fix pour)? if not how should I do?

Thanks all