I recommend my Stakeholder Control Rules for this purpose (https://medium.com/non-violence/stakeholder-control-truly-democratic-organizational-governance-rules-a4dd2c6f68f2), or traditional membership non-profit (e.g., the American Legion or Sierra Club in America) board election rules, not sociocracy. (https://medium.com/non-violence/stakeholder-control-sociocracy-isnt-all-that-democratic-part-deux-285d18aee5b)