Petition for (Custody) (Visitation). These forms and instructions are available in the General Clerk's Office, Room 108, in the Nassau County.Complete General Form 17 to petition for custody or visitation. To get an order of protection (OP), go to the Petition Room 7-70 on the 7th floor. An OP is a paper from a judge that makes rules about contact between people. The following forms can be printed and submitted to your county DRS. Read the descriptions to determine which forms are appropriate for your needs. To request an emergency custody order, you must prepare a Motion for Emergency Custody, along with an. Affidavit verifying the basis for your motion. This guide includes forms and instructions for a letter and affidavit to request that the court register an out-of-state custody order in Texas.