During training, it is often very beneficial for a monitor or trainer to point out to the viewer where mistakes have been made, where the viewer is starting into "castle building", to suggest breaks, to guide a viewer back into structure, etc.
In training mode, it is always a good idea for the trainer to know what the target is. In this way, the trainer can constantly appraise what is going on in the viewer’s mind and immediately either encourage or discourage it, as need be.
A training mode session is also valuable for training new monitors. They get to actually work with the new viewer on a one-to-one basis, and learn to "read the viewer" - that is, read the body signals and other "micromovements" of the viewer.. For that reason, it is usually a good idea for the monitor to also know what the target is.
In training mode, the viewer student will often become confused about the process, so the trainer or the monitor will sometimes need to reach over and point something out by touching the viewer’s transcript paper. In training mode, the trainer and monitor may often need to ask the viewer pointed questions about the structure, such as, "Are you castle building?", "Do you want to take a break?", "Do you want another cue?", etc.
In training mode, the viewer must be in charge of the session, but with strong guidance of the trainer, and possibly of the monitor.