if you are introducing monitoring on a per user precision why use modulo? with a per user scheduled monitoring moving users based on user ids works as is

maybe i was unclear in the above but i like the gp's simple solution.. especially because i personally have an affection for the modulo operator, but also because.. it only requires an operator that performs in a scale dependent finitely specific number of cycles and works as designed without any monitoring

the above was intended to bring attention to shortcomings and probable failures in an otherwise elegant attempt

the method is flawed but the direction is superb