Actually it's quite simple. Gate agent has the bag count from T-point before anyone even boards the next flight. Scan the people and adds this number onto our load sheet. Hit's print and walks it down to us, were we put the numbers in the OPC (Laptop computer type think) and it spits out the speeds and trim settings. After we get the loadsheet from the Ops agent, takes about 30 seconds to enter it into the OPC. Off we go. Nothing special about it or program needed.