What type of license structure permits a broker to represent multiple buyers or sellers at the same time?

The type of license structure that allows a broker to represent multiple buyers or sellers simultaneously is transaction brokerage. In a transaction brokerage, the broker acts as a neutral facilitator between the parties involved in a real estate transaction without representing either party as a fiduciary. This means that the broker does not owe allegiance to either one, enabling them to work with multiple clients at the same time effectively.

This contrasts with single agency, where the broker represents only one party in the transaction, serving as their fiduciary and advocate. In dual agency, the broker represents both the buyer and the seller in the same transaction, which can lead to potential conflicts of interest since the broker must balance the interests of both clients. Exclusive agency refers to a relationship where the seller retains the right to sell their property without owing a commission to the broker if they find a buyer themselves, but this structure does not imply representation of multiple clients.

Thus, transaction brokerage is the correct answer, as it permits representation of multiple parties concurrently while maintaining a neutral position.