On or before the last Monday in March commencing upon the formation of the District, the selectboard of each member municipality shall appoint its representative and an alternate representative to the Board of Supervisors for a term of two years. Appointments shall be in writing, signed by the chair of the selectboard, and presented to the Clerk of the District. The selectboard, by majority vote, may remove their appointed representative or alternate during the two-year term for cause. The alternate representative shall represent the municipality at all meetings of the Board of Supervisors that the regular representative is unable to attend and shall have all the rights and privileges of a regular representative. At the first organizational meeting after the formation of the District to be held under section 204 of this subchapter, one-half of the District's members shall be designated as those whose initial representatives appointed under this subchapter shall have an initial term of one year.