I knew that - what i was stating was that if when your name/number is called and the offer is not satisfactory (in other words it has not risen to your desired level) you can decline to volunteer. Or in one case for myself i was on the wait list for upgrade also and that came through before my name was called for bumping. Took the upgrade and had my name taken off the volunteer list.

btw - how do you do that quote thing - or direct me to where the instructions are - thanks