Final answer:
A crumb scraper is placed on a table in a dining establishment after initial greetings to indicate that the table has been served and to maintain proper service coordination among staff members.
Step-by-step explanation:
When initially greeting a table in a hospitality or restaurant setting, it is common for staff to use a subtle marker to indicate that the guests at the table have been attended to. This practice ensures that all guests receive timely attention and prevents multiple staff members from redundantly approaching the same table. The item used for this indication can vary by establishment, but one common practice is to place a specific object on the table after the initial greetings have been made.
In the context provided, the correct answer is a crumb scraper. After the server has greeted the guests, the crumb scraper can be discreetly placed to signal to other team members that the table is being served. This helps in maintaining a coordinated service flow and minimizing any confusion or disruption that may arise from overlapping service.
The crumb scraper serves as a non-intrusive indicator to restaurant staff that a table has been greeted and is being attended to. This practice is part of professional table service etiquette and coordination.