I am the President of a large PTO. Someone volunteered to chair one of our fundraisers and I said yes. Who's going to turn down someone offering to help? Now, there are board members upset b/c they don't believe this person to be trustworthy. Can a board overturn this kind of decision if it's not stated in the bylaws (nothing governing chairs of events are in the bylaws)? Do board members really have the authority to pick and choose volunteers?