Invigilator
Proctor.
A professor
A person can call upon the services of Breitling emergency by going into their cupboard, taking out their phone book and looking up the number for that company.
Druggie
The person is a participant (taking part in something).
A photographer
MCAT
an accessory after the fact may be what you are looking for
a palm reader
Such a person is referred to as a "catechumen."
when your call for document writer exam
That is third person narration
In fact i am looking for an answer too! What is the solution then?!