Trips that fit your fleet and bases show on your Trip Desk. Bid with a wholesale price for one of your aircraft and say how long the price holds. Brokers see your bid; travelers only ever see the all-in price their broker sends.
Bidding stays open until the broker or traveler books, up to 2 hours before departure. You can lower your price at any time, but not raise it once sent, and you'll see where your bid ranks.