Here is a quick hypnosis and NLP technique that I often use:

When explaining the pre-talk to the person, tap a space on the table that is closer to them, and label it the “conscious” mind. Then refer to a space closer to you, and label it the “unconscious mind.” This way when you’re talking, you can put things into the space for the unconscious mind.

Note: When I say “label” it, I mean that you are referring to it in an ambiguous way. You don’t outright tell them, “this is your conscious mind, this is your unconscious” instead you say “your unconscious mind” while gesturing to the space closest to you.

The unconscious space is closer to you, so it presupposes that if things come from that direction, they must be intended for the unconscious mind. You are essentially creating a submodality shift — by aligning things on a line, for which close to you means “unconscious” and away from you means “conscious”.

We can also indicate messages to be for the unconscious mind by using tonal marking and by referring to a visual location with our eyes (example: looking over the person’s right shoulder every time a message is meant for the unconscious mind)