Method for operating system having at least two household appliances and system

The invention relates to a system for operating at least two identically designed household appliances (1, 2), in particular at least two floor treatment appliances or at least two kitchen appliances, a first household appliance (1) carrying out a work having at least one predefined work step, the job steps are defined by means of device parameters (3) and/or execution parameters for executing the job steps. Comparing a currently performed work step of the first household appliance (1) with a simultaneously performed work step of the at least one second household appliance (2), contact information (5) containing at least one data communication address (4) of the second household appliance (2) or of a second external terminal (7) in communication connection with the second household appliance is sent to the first household appliance (1) or to the first household appliance (1) when a work step of the first household appliance (1) coincides with a work step of the second household appliance (2). And a first exte