per‧son‧al‧ize also personalise British English [transitive]
to put your name or initials on something, or to decorate it in your own way, to show that it belongs to you:
Why not do something to personalize your office?
to design or change something so that it is suitable for a particular person:
All the products can be personalized to the client's exact requirements.
to discuss a subject by talking about or criticizing the people who are involved in it, rather than talking about it in a more general way:
the mass media's tendency to personalize politics
a personalized number plate