Has it's own autonomous spraying, not AI workers and not extra cost on the automatic spraying, just take it to your field and fill it then press H and get down, it should spray by its own
If you take two of them to the field and start them on the same corner or spot they will follow the same route, but if you start them on the same side but different corners they will work each one tehir sides until the field gets fully cover and both will detect as completed work
