I'm issuing a written final exam to a student in Nepal. In setting this up I need to communicate to a non native speaking person in the abroad administration, in a clear and precise manner, that a person overseeing the examination procedure needs to be available for the duration of the exam.
I (we) have previously used invigilator. I find myself very uncomfortable with this word.
TFD suggests that this is a word only used in the commonwealth. Proctor (US/TFD) also seems to me rather uncommon or unclear.
What would be an easy to understand phrase or word to describe this need?