What does "in Review" signify when performing Agent trading?

The proposal is being reviewed by the proposing Agent before it is sent to the second Agent.

The proposal has been sent by the proposing Agent. The second Agent is reviewing prior to responding.

Both Agents have confirmed the trade proposal, but the trade is waiting for approval from the Supervisor.

This is during a community proposal when an Agent issues a proposal and is waiting for any other Agent to respond.