Rule 6 - ASSIGNMENT OF JUDGES(a) The Presiding Judge shall assign judges of the Region to hold special or regular terms of court in any county of the Region to try cases and dispose of accumulated business. (b) Judges shall be assigned by the Presiding Judge in the manner provided by Chapter 74 when the active judge of the court: (i) is absent or unable to serve; (ii) voluntarily recuses or disqualifies; (iii) is recused under the provisions of Rule 18b of the Texas Rules of Civil Procedure; (iv) is disqualified for any reason; (v) needs assistance with a pending docket; or (vi) for other reasons required by law. Judges also may be assigned by the Presiding Judge if a judicial office is vacant because of death, resignation, or other cause.Tex. 7th. Admin. Reg. R. 6