My experience with the appeals board I staff is that members, regardless of any distinguishing characteristic, are hard to come by. I usually end up cold-calling professional organizations or employers who have members who would meet the professional requirements of the board. I certainly understand the need for boards to reflect their community. Some possible avenues for pursuing demographic representation is to seek board members from neighborhood associations, churches, ethnic newspapers, or other groups of local citizens. A possibility for age diversification is to reach out to the local colleges/universities. (Or post on Twitter or Facebook). The board I staff has four year terms, with a limit of two back-to-back terms. I hope this information is helpful.