Who has last say at condo association owners meetings?

Does the Board have the last Say? I am on the board of my condo associatioin Ohio. We have 12 families. At every meeting someone will bring up something they want done & ask for a vote, saying they have the right to vote. They are owners & pay dues and have a say in everything. If this is so, why am I there as an officer? Where in our bylaws does this address this problem?