The members of the Board of Adjustment shall be appointed by the governing body. The terms of the regular members first appointed under this chapter shall be so determined that, to the greatest practicable extent, the expiration of such terms shall be distributed evenly over the first four years after their appointment. Thereafter, the terms of each regular member shall be for four years. The terms of the alternate members shall be for two years, except that the terms of the alternate members shall be such that the term of not more than one alternate member shall expire in any one year; provided, however, that in no instance shall the terms of the alternate members first appointed exceed two years. Thereafter, the term of each alternate member shall be for two years. No regular member or alternate member may hold any elective office or position under the Township. No regular member or alternate member shall be permitted to act on any matter in which he has, either directly or indirectly, any personal or financial interest. A regular member or alternate member may, after public hearing if he requests it, be removed by the governing body for cause. A vacancy occurring otherwise than by expiration of a term held by a regular member or alternate member shall be filled for the unexpired term only.