The present invention relates to a new layering process, in particular to a process for the manufacture of multiparticulate solid oral dosage forms based on a dry spray layering technique optionally with electrostatic attraction. The actuator is extendable and retractable and may be powered either electrically, hydraulically, or by compressed air. This Virtual Factory provides the ability to assess any possible production sequence for determining an optimal of production sequence according to the criteria defined the user.