It's called getting your PhD.
You would call them a doctoral student.
An individual Joe Smith with a PhD would be addressed as Dr Smith or Joe Smith, PhD but not Dr Joe Smith, PhD.
Usually someone wanting to be a university professor has earned their PhD or MFA. If you are working your way toward a Phd you may be a teaching assistant in the meantime.
a gimp
Step 1: you call someone to do it for you
No
Most people use a telephone.
Malcolm X: University of California Berkeley"What do you call a blackman with a Bachelors, Master's, or PHD?..You call him a N####r..."
"Let's call it a day?" is said when someone suggests packing up working for the day and going home.
Professor or Scientist. Sometimes (If they have a doctorate or a PhD) you can call them Doctor.
Someone who has earned their PhD.
The general rule is to place a comma after "PhD" when it is used as a suffix after a person's name (e.g., John Doe, PhD). However, if "PhD" is used in the middle of a sentence to describe someone's credentials, no comma is needed (e.g., John Doe has a PhD in Economics).
You should call your manager or supervisor. It is not your responsibility to cover for someone else. You could also call in someone else in the position to see if they wanted to come in.