Utilisation is a term used in the Milton Model of hypnosis.
Like its literal meaning, it means “make use of something”.
For instance, if a hypnotherapist observes that his client’s facial muscles are tense and cannot relax well, he can utilise this situation by saying something like “tense facial and body muscles will add more stress to the body that create toxins that if not being properly discharged, can accumulate inside and harm the body. In order to benefit and enjoy a healthy body, it is beneficial for you to start relaxing all your muscles…”
This approach allows you to be creative in handling the situation.