Final answer:
A 'waitlist' or a seating chart is used to keep a record of guests who have arrived at a restaurant but have not yet been seated.
Step-by-step explanation:
The term that refers to a record of names of guests who have arrived but have not yet been escorted to their tables is known as a waitlist or a seating chart in a restaurant setting. In a campus restaurant scenario, the student and friends who are looking for a table but have not been seated would be on this list until a table becomes available. During busy times, particularly between classes or at unconventional meal times such as 2:30 PM, the need to manage such a waitlist becomes essential in ensuring all guests are accommodated in a timely manner.