Abstract: A control method for controlling a converting machine that acts on plate elements for forming containers, the method including displaying with a graphical control interface at least one image representing a plate element or a container formed by a plate element, and control areas which are superimposed on the image and which respectively symbolize characteristic magnitudes of the conversions to be induced on each plate element, receiving by a processing unit a command entered individually by the operator by activating a control area, and controlling in response to the individually entered command, the processing unit to generate at least two respective adjustment signals correlated by a predetermined adjustment law to adjust at least two respective adjustable parameters, whereby corresponding converting members induce a change in a characteristic magnitude.