I assume you are asking about the advice that Calpurnia gave to Scout concerning Jem's growing older in the Harper Lee novel, To Kill a Mockingbird. Please restate your question if this is not correct.
At the beginning of Part Two (Chapter 12), Scout complains about Jem's "difficult" behavior since turning 12 years old. Scout asked Atticus if Jem might have a tapeworm, but her father answered that it was Jem growing up and to be patient with him. Meanwhile, Calpurnia gave Scout some good advice.
"... Mister Jem's growing up. He's gonna want to be off to himself a lot now, doin' whatever boys do, so you just come right on in the kitchen when you feel lonesome. We'll find lots of things to do in here."
Then, Calpurnia took Scout under her wing, where the young Finch girl discovered some kitchen skills.
Calpurnia would do until Dill came.
Since Atticus was away much of the time preparing for the Tom Robinson trial, Calpurnia decided to take Jem and Scout to her church, where they learned about the many differences between their own place of worship and the First Purchase A.M.E. Church. They discovered that Calpurnia spoke differently outside the Finch household; that she was one of the best educated members of her church; and that they would be welcome at her own home any time.