Final answer:
The question does not specify a certain protocol for when two servers are assigned to a table, but service strategies generally recommend combining smaller groups to meet a certain threshold. Typically, a table of at least ten guests would justify two servers in a formal setting, although this can vary.
Step-by-step explanation:
The specific question about the minimum number of guests at a table for when two servers are assigned does not appear to be directly addressed in the provided information. However, if we infer the context involves decisions on service based on numbers at an event or party, we can approach this from a general mathematical perspective to optimize service strategy.
Considering the data presented, we could focus on a strategy where tables are combined to meet a certain threshold of occupants. For instance, if the policy is to have at least five guests per table for two servers to be assigned, we could combine smaller groups to ensure the requirement is met. Moreover, based on the information given, we can conclude that all guests would initially be served two brownies each. But this policy about dessert does not directly address how many guests would warrant two servers for their table.
In scenarios such as a dinner party, diverse factors influence serving strategies, including the space's layout, the type of service provided, and the guests’ needs. Nonetheless, in most formal settings, having at least ten guests at a table would typically justify assigning two servers to ensure efficient and attentive service. Without exact guidelines or standards provided, the question can be open to interpretation based on specific event planning norms.