If you started a search in "Test Drive Mode" - edit the search from the My Trips/My Searches page. As a last step (after picking the cluster and specifying dates), check the box "Book it before it's gone!", (see below) and add the required information. tripBAM will shop the existing cluster, reply with the best rate available, and if accepted, create a reservation at that hotel. As the system finds lower rates that are accepted, tripBAM will automatically cancel any prior reservations and book the new rate or hotel.
If you ACCEPT, do you want us to book a reservation at this new rate?