The Illinois Petition for Modification of Allocation of Parental Responsibility is a legal document used to modify an existing court order regarding parental responsibility. This document is filed with the court, and it requests for a change in the allocation of parental rights and duties. It is used to modify existing orders related to visitation, decision-making authority, parenting time, and responsibility for financial support. There are two types of Illinois Petition for Modification of Allocation of Parental Responsibility. These include: 1. Petition for Modification of Parenting Time: This type of Petition for Modification of Parental Responsibility is used to modify the existing court order regarding parenting time. 2. Petition for Modification of Allocation of Parental Responsibilities: This type of Petition for Modification of Parental Responsibility is used to modify the existing court order regarding decision-making authority, parenting time, responsibility for health care and educational decisions, and other rights and duties of the parents.