A computer-implemented method provides a job performance plan for a plurality of jobs to be performed at geographical locations. The computer receives job data that represent job requirements for specified locations and processes the job data with the data-structure to provide an initial job performance plan. The computer receives updated job data and identifies a sub-set of the data structure. The computer processes the updated job data with the sub-set to provide an updated job performance plan, wherein some of the routes are re-assigned to specified job performers. The sub-set is selected under consideration of location clusters. Step repetitions with different clusters are provided to increase accuracy.