After a viewer becomes proficient, he/she moves slowly from practice to operations mode. Moving into operations mode does not negate the need for further practice.
In operations mode, the target is always an unknown. After all, if the target were known, then they would not need a remote viewer. The monitor is basically there to provide the start time, coordinates, any cueing and the end time. In actual operations, the monitor may also suggest breaks, may actually banter back and forth about things not related to the target (as a sort of in-session break), and may both ask for clarification of some perception, or ask what the viewer would like to do or view next.
In operations mode, the viewer has to be in total control of the session. The monitorís main duty in operational mode is to keep quiet unless speaking is absolutely necessary.