Thanks for your answer; it made me think more deeply about the simulation while I reviewed the help manual again.
Please allow me to ask you one last additional question:
Having a simulation with a large volume fraction and I want to evaluate the collisions present, I would use the DDPM and DEM options. So my question is, under these conditions should I activate the Granular option offered by the DDPM? (I have read the manual, but I still have that doubt)