applicatorist
If your question is "What do you call someone who uses the products made by industry?", you call him a consumer.
applicatorist
Lumberjack
A politician.
Its someone who is very skilled at what he does. Uses the skills they have to win.
A Nanotechnologist.
Some people call them monsters and not for a fun name.it just describes them.
A person who delivers speeches effectively and uses words skillfully is called an "orator" or a "rhetorician."
The service in which your conference call uses would depend on what company you are calling/calling from. The best way to find out would be to ask someone above you.
A person who frequently uses bad words is typically referred to as someone who curses, swears, or has a foul mouth.
Call your Disctict Attorney Office and report the fraud.
There is no special term for a person who uses any of the products offered by the Xerox Corporation. Sometimes people whose job it to manage and maintain a xerographic copier is called an "operator."