The 135 (35mm film processing) Module has a film slot where the 35mm cartridge is positioned and blocked.
The film is then clipped and the lid is closed in order to rotate the outer knob and loading the film onto the reel. Once fully loaded, an internal blade will cut the film, separating it from the cartridge.
The 120 (Medium Format Film Processing) Module is equipped with two compartments: the roll is positioned in the top one and the film will be automatically loaded in the bottom one.
Once the lid is closed, pulling out the black backing paper, through the split on the back, will automatically load the film in the second, lightproof compartment. Having completed this operation, the lid can be opened in order to clip the film and then closed again in order to rotate the outer knob and loading the film onto the reel.