Final answer:
The name of the receptionist who fills in for Pam while she is at art school is not provided in the given information.
Step-by-step explanation:
The name of the receptionist who fills in for Pam while she is at art school is not provided in the given information. However, the information provided does not indicate the receptionist's name, so we cannot determine who fills in for Pam specifically. The given information only mentions a part-time promotion assistant, an admissions officer, someone trained to conduct art appreciation presentations, a maid of honor, and a coworker. None of these individuals are mentioned to be filling in for Pam at art school.