You can file a petition for child custody in your county's Superior Court. If you are divorcing, the petition will be included in your divorce papers.A change of custody is allowed when the parent(s) can prove that there are substantial changes affecting the welfare and best interests of the child(ren). A blank Response to Petition for Custody and Support of Minor Children (form FL-270) must be served on the respondent with a copy of this Petition. Petition for (Custody) (Visitation). You may pick up one free petition packet from the Bibb Superior Court Clerk's Office in Room 216 of the Bibb County Courthouse. Forms to print out (2) divorce forms find links to forms to file for a divorce and answer a divorce complaint in Georgia. Your Court may have additional forms you must file in a case. The steps to get child custody include filing a petition, developing a parenting plan, and going to court. After review, the petition or pleading is sent to the Family Court in the county where the non-custodial parent lives.