Downloadable forms for eFiling, Divorces, and Suites Affecting the Parent-Child Relationship, Child Support, Hail Claims, Legal, LegalEase, and Passports. The Texas Attorney General's office provides some legal forms related to child support on their website including complaint forms and income withholding forms.Petition for (Custody) (Visitation). If you cannot apply online, you can request a physical application from the Child Support Division. I understand I must fill out and attach a Declaration in Support of Changing. Primary Custody within One Year form to this Petition. File this form when you and the other party cannot agree to a temporary arrangement for parenting, child support, or other issues before the final hearing date. What forms do I need to file with Bexar County, TX to move the case to Harris County, TX? I am the non-custodial parent. Petition for (Custody) (Visitation).