You pick the line and the juice you want to pay and the amount you want to risk. If Pinnacle ever gets there your offer becomes a bet. If not, no bet. When you make an offer no funds of yours become "restricted". If, after having made an offer, the line gets there but you don't have enough funds to make the entire bet they will only use the amount available. It is possible that the offer you make be filled partially. You may at any time rescind (withdraw or cancell) whatever portion of a live offer has not been filled yet.