How to hide employees in Confidential Positions in the Fluid Company Directory & Org Chart?

We are trying to implement the Fluid Company Directory & Org Chart for a state government. We have multiple business units with employees in Confidential (sensitive positions) we would like to hide/exclude from displaying in the Company Directory & Org Chart. For example, employees in these positions could be politicians, judges, undercover law enforcement personnel, thus, they should not have their name and position posted in a statewide directory and org chart.

   Has anyone encountered this scenario when implementing the Company Directory & Org Chart?

   If so, how did you hide employees in confidential positions or prevent employees in confidential positions from appearing in the directory & org chart?