These volunteer commandments are based on some prepared by TEDxPhoenix and I think with a little adjustment they have value for many organizations.
TEDx Manhattan Beach Volunteer Commandments
Thou shall spread ideas.
Thou shall welcome all.
Thou shalt know the difference between TED & TEDx.
Thou shalt not use TEDx for personal gain, or to promote a personal agenda.
Thou shalt treat one another with respect and understanding.
Thou shalt be constructive with your feedback and criticism.
Thou shalt uphold a respectable public image.
Thou shalt not bite off more than ye can chew.
Thou shalt keep everyone in the loop.
Thou shalt be remarkable, have fun, be passionate, and dream big!