That should all be in your bylaws. Don't feel bad, untill midway through the year as vp I didn't even know that our group had bylaws let alone what our said. Now that I'm president, at the beginning of the year I give all of the officers and regularly attending members a packet of information which includes dates of events, chairs for the events, committee members, officer information, and a copy of the bylaws. Many officers keep their minutes/agendas in these folders throughout the year.

Recently i have been elected the PTO sec.
I have no idea what my responsibilities are as sec. other than recording meeting minutes.
I also don't know what the other officers responsibilities are. I have requested these from the current Pres. and have gotten no response. I also have requested our bylaws and have had no luck there either. Can you help me???