Process model method adapted for operating one of plurality of working machines, in particular for harvester of tuberous crops

Method for adapting a process model for operating one of a plurality of working machines, the working machines comprising: one or more first combined agricultural working machines (1); and at least one further working machine, which is adapted on the EDV device (20), and which, during operation, generates at least one first process model output on the basis of the at least one first working data set by means of a first process model operating on the first working machine (1) in order to influence the agricultural working results, thereby obtaining at least one subsequent working data set, the EDV device (20) obtains, via at least one interface, at least part of a first machine data set from at least one first working machine (1), which is arranged in particular remotely, during or after its operation, on the EDV device (20), a base process model stored in the EDV device (20) changes the first process model or a further process model, and the changed process model is subsequently provided completely or partial