Upon request of the social worker, district attorney, the child, or the child’s parent, guardian, or custodian, or on the court’s own motion, the court or the clerk of the court, or an attorney, pursuant to Section 1985 of the Code of Civil Procedure, shall issue subpoenas requiring attendance and testimony of witnesses and production of papers at any hearing regarding a child who is alleged or determined by the court to be a person described by Section 300. When a person attends a juvenile court hearing as a witness upon a subpoena, in its discretion, the court may by an order on its minutes, direct the county auditor to draw his or her warrant upon the county treasurer in favor of the witness for witness fees in the amount and manner prescribed by Section 68093 of the Government Code. The fees are county charges.