There should be position descriptions in the by-laws...well in MOST by-laws there is a section on this topic. Do you have a copy of Roberts Rules of order? That great little read book can give you an idea of what a VP does or is expected of them.
Yeah, this is a handy section to have in the by-laws as if you think about it even Pizza Hut gives a job description to a waitress! (past life) Can you talk to the Secretary to see what version of the by-laws 'she' may have? The reason I say that is in 'most' pto's it is that person that keeps the lastest version- as part of their duties.
VP...if all else fails its basically
Very important Person....when the Prez is gone! HAHAHA
Oh Come on! That WAS FUNNY!