Ohio Rev. Code § 2151.07
The juvenile court is a court of record within the court of common pleas. The juvenile court has and shall exercise the powers and jurisdiction conferred in Chapters 2151. and 2152. of the Revised Code.
Whenever the juvenile judge of the juvenile court is sick, is absent from the county, or is unable to attend court, or the volume of cases pending in court necessitates it, upon the request of the administrative juvenile judge, the presiding judge of the court of common pleas pursuant to division (GG) of section 2301.03 of the Revised Code shall assign a judge of any division of the court of common pleas of the county to act in the juvenile judge's place or in conjunction with the juvenile judge. If no judge of the court of common pleas is available for that purpose, the chief justice of the supreme court shall assign a judge of the court of common pleas, a juvenile judge, or a probate judge from a different county to act in the place of that juvenile judge or in conjunction with that juvenile judge. The assigned judge shall receive the compensation and expenses for so serving that is provided by law for judges assigned to hold court in courts of common pleas.
R.C. § 2151.07