Learn how to file for paternity, child custody or parenting time, what forms you'll need, and where to file. Learn how to request a temporary, immediate child custody or parenting time order while you wait for your case to go through the system.Learn about child custody and visitation laws, and the legal issues you will need to think about. 1. File for custody. You may file in the family court or a court of a different name that hears custody cases. The Affidavit Disclosing Care or Custody Proceeding is a form you have to file in court cases that involve a child. The guiding principle in Massachusetts for creating a parenting plan is the "best interest" of the child, also described in the law as "happiness and welfare.". This will require filling out an "affidavit of indigency,"2 which is a sworn statement in which you give facts to prove you are a person of low-income. The Code of Massachusetts Regulations (CMR) covers prison visitation policy. If you are incarcerated in a state facility, 103 CMR 483.16 applies.