Which of the following is a requirement for brokers participating in designated agency?

In designated agency, a crucial requirement is the separation of agency relationships. This structure allows different agents within the same brokerage to represent different clients in the same transaction while maintaining their fiduciary duties to their respective clients. Each agent operates independently regarding the client's interest, ensuring that conflicts of interest are minimized and that client confidentiality is upheld.

This separation is essential because it prevents the potential for a single agent to compromise the interests of one client over another and ensures that all parties receive the appropriate level of representation without bias. By maintaining designated agency, brokers can effectively manage multiple clients and transactions simultaneously without compromising professional integrity or legal obligations.

The other choices, while potentially relevant in a broader context of real estate practice, do not specifically pertain to the unique framework and operational requirements of designated agency.