Section 143(1) in The Mizoram Autonomous District Council (Constitution and Conduct of Business of the District Councils) Rules, 1974
(1)The Returning Officer shall appoint a presiding officer for each polling station and such other persons (hereinafter referred to as polling officers) to assist the presiding officer as he thinks necessary:Provided that if a polling officer is absent from the polling station the presiding officer may appoint any person who is present at the polling station to be the polling officer during the absence of the former officer and inform the Returning Officer accordingly.