The first comment in this thread:
OP said "day to day" activities. He's updating one pump at a time. What are the other pumps doing? Dispensing gasoline. To update all 16 pumps at once would render all 16 pumps out of service for half an hour. That is simply unacceptable for the station. They would not want to just shut everything down and eliminate a half-hour's worth of revenue from 15 pumps just so OP is not inconvenienced.
The IT is the guy updating the pumps. The users are the customers using the pumps to get gas.
Somebody either didn't read or didn't comprehend the previous posts in the thread they're posting in.