Answer:
Gatekeeper
Explanation:
According to my research on different roles and responsibilities within an organization, I can say that based on the information provided within the question in this example Paula occupies the role of a Gatekeeper. The individual in this role controls access to different things within an organization, including the flow of knowledge. Which Paula seems to be doing since she controls who speaks, the time for lunch, and who gets assigned to which group.
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