Multiple, variable workloads for multiple workers

Hi everyone,

My problem reads as follows: I'm working in a warehouse and there is a variable number of loads, each consisting of a variable number of cases, that have to be prepared by a variable number of orderpickers every day.

The goal is to distribute the loads to the orderpickers so that the total workload per orderpicker is as evenly distributed as possible, and that no one gets more than 1200 cases. (see attachment)


I tried to solve this problem with solver, but I couldn't figure out how to set the parameters.


Can anyone help me please? Thank you so much!