[rules-users] [Optaplanner] Filter values

Hi, I've got a domain with the following entities: - Person (planning entity) - Desk (planning variable) - DeskAssignment (solution) All persons should be assigned to a desk according to some rules. What I would like to do is to make certain Persons and their Desk immovable, ie, they are assigned a desk in the initial solution and should be fixed there. They are only there for the score calculation. I looked at 14.3.1 Immovable planning entities but couldn't really see how I would apply it to my use case. Why is the filter applied at the planning entity level? Since it's the planning variable that changes I thought that I should somehow filter the allowed values for the Desk. Regards, Mats