The conversation manager (Sage), offered as "someone else". Null when the catalog doesn't have it.
Looks an agent up by ID, with its status: as in the chat, an agent that isn't active, or is restricted, is not offered. Undefined when the catalog doesn't have it; the mapping then falls back to the name (and, for the previous agent, the description) the point itself records.
The agents the mapping can resolve: the engine's, in the driver.