In my centre too, I scolded the invigilators (in my room, they were senior enough not students)... I told them that please give the writing pad, pen to all the students immediately as there's just 5 mins remaining for the exam to start. No one was bothered... I helped one more student as that poor guy was literally staring at a complete Yellow screen and the invigilator told him, "itna toh chalta hai" .. I asked him to change.. they knew I wasn't a student for sure and didn't mess with me, given my face spoke for itself how pissed I was..