Eldon is mediating a dispute between a labor union and a company. Eldon has structured the mediation such that the parties first met together in a joint session to identify the issues in the dispute, and then Eldon moved the parties to different rooms, and he went between the two rooms asking questions, and offering different proposals to resolve the dispute. The structure of this type of mediation is best described as:

Shuttle diplomacy

Mixed motive mediation

Mediation$-$arbitration

Non$-$binding arbitration

Final offer arbitration