Retirement tax questions

@jyeh74  @ColeenD3 
I’m really confused. 

The original question has 2 questions in it. I actually looking for answers for the same 2 questions.

 

1.how to / how detailed the log for household chores?

 

2. is there a need for kids to file income tax?

 

 If I have missed the answer, please direct me to it. 

thanks for patience and efforts