Ok its about a family of kids where the parents Die I think. The oldest child becomes a newspaper advice columnist... it ends with then in a courthouse and they escape through a window and supposedly go to Hawaii where he again becomes a newspaper advice columnist
The whole movie is the kids pretending they have a parent

The Beniker Gang (1985)
starring Andrew McCarthy
IMDb synopsis:
Five orphans in an orphanage don't want the authorities to break up the family they made of each other: Arthur, the eldest, who writes the advice column Dear Lola; Ben who eats paper; introvert James; Cassie, the only girl; and Edmond. They run away from the orphanage to stay a family, but it won't be so easy.

The Beniker Gang (1985) - IMDb