The chair, as a rule, to my knowledge,
has always been chosen from among Board members. By definition, I imagine that
the chairman has experience and knowledge of the organization and the field of work that he will be directing for the years to come. I personally was asked whether I was interested in my name being put on a list—before anything was decided, I assume—and eventually I was told that I would be invited to be appointed as chair of the board. To my knowledge, that is what happened in my case.