Accessing is a looping process, ie. We can use this information to develop rapport by matching the person's behavior. Anchors happen naturally, and they can also be set up intentionally, for example, ringing a bell to get people's attention, or more subtle, standing in a particular place when answering questions. Anchors can be naturally occurring or set up deliberately. An example of an anchor for a particular set of responses is what happens when you think of the way a special, much-loved person says your name.
Anchors occur naturally.
Bandler and Grinder discovered old modeling that you can deliberately set-up a stimulus with a gesture or a touch or a sound to hold a state stable. Where an external stimulus is paired with an internal state. It's a sensory stimulus paired with either a response or a specific set of responses or states. Once this association has taken place, you can then trigger the experience at will. It works in the same way that language does.