In Timefold, how to deal with pinning an entity when its a chained planning variable?

I have WorkOrder PlanningEntity that’s a chained planning variable that is assigned to a technician. If I pinned a workorder (so the startime and assigned tech is fixed), it gets pinned correctly but the solver no longer add any workorder to this technician. How do I adjust it so that solver solves around the pinned work orders? (add work order before/after the pinned work order)

Added @PlanningPin to the WorkOrder class

@PlanningPin
private boolean pinned;