A method for predefining an operating point of a drive machine of a drive system, including the drive machine and at least two loads which are driven by the drive machine is disclosed. The method includes the following steps: (i) identification of in each case one instantaneous load power demand of the at least two loads, (ii) determination of at least one partial request point of the drive machine for each identified load power demand in order to meet the respective load power demand, (iii) determination of at least one overall request point of the drive machine on the basis of the specific partial request points, (iv) determination of a cost variable of the drive machine for the at least one overall request point, and (v) selection of the operating point taking into account the cost variable and predefining of the operating point.