(A) Acting Chief Judge. If the chief judge is absent from the district or is unable to perform required duties, such duties shall be performed by the judge in active service, present in the district and willing to act, who is most senior on the date of the judge’s commission, other than a recalled judge. Such judge is designated as the acting chief judge on such occasions.
(B) Alternate Judge. If a judge is unable to perform required duties, such duties may, with the consent of both judges, be performed by the judge designated by the chief judge as the “alternate judge” for that judge.