Prefer to spread variable decision

[jason-linthwaite]

Hey again. This could be simply the multi objective optimisation problem I recently posted about, but quick question, given the model:

1. Has 3 variables
2. All 3 variables have the same attributes
3. The model optimizes max on one of the attributes/values
4. Has constraints for a max of 3 per variable
5. Searches for a max of "score"

Currently, the solver will provide a solution suggesting variable 1 to have 3 occurrences.

Is there a way to tell the solver / to calculate options where the solver will prefer to "spread" the solution among similar variables, so in this case, the solution would be variable 1, variable 2 and variable 3 each with 1 occurrence?