Brian, while second hat is usally , It is what you make of it!
To my way of thinking, you are being groomed to take over the head chair, Pres. It depends on if your Pres. gives you some leeway and things to do! It Should be explained in your manual if you have one of what your duties should be! Good Luck in your position as any officers job is important! You learn as you go and is a training ground!!!!! for the betterment when you step up to the next position of responseability!