The Arizona Petition to Establish Legal Decision Making, Parenting Time and Child Support is a form used by parents to ask the court to decide the legal decision-making, parenting time, and child support for a child. It is typically used when the parents of a child are not married or when the parents of a child do not live together. The petition must be filed in the county where the child resides. There are three main types of Arizona Petition to Establish Legal Decision Making, Parenting Time and Child Support: Joint Petition, Petition by One Parent, and Petition by Third Party. The Joint Petition is used when both parents agree to the legal decision-making, parenting time and child support. The Petition by One Parent is used when only one parent is filing the petition. The Petition by Third Party is used when someone other than the parents is filing the petition. The petition must include information about the parents, the child, and the requested legal decision-making, parenting time and child support.