To access Invigilator List, you need to go to Data and select Invigilators List.

You may analyze the Invigilator List to know if the invigilator position has been placed in the right slot.

Diagram 3.2.1 Invigilator List Analyzation

To Locate the invigilator, you may right click and select Locate.

Diagram 3.2.2 Locate Invigilator 

To edit, you may refer to the Stage 6: Invigilator Position (Editing Invigilator)