Present perfect 'have/has been ' is used when describing an action completed in the recent past and still assumes importance in the present. We use 'had been' when you describe something that happened in the past before something else in the past.

When to use has been and had been?

“Had been” is used to mean that something happened in the past and has already ended. “Have been” and “has been” are used to mean that something began in the past and has lasted into the present time.

Has been or had been examples?

For example, if I started studying art when I was 13 years old and I am still studying art, I would say "I have been studying art since I was 13 years old." "Had been" is the past perfect tense and is used in all cases, singular and plural.