Yes you can. Here are some instructions for using the dummy game commander. Which AFPD version do you have? When starting AFPD pls check for this version in the upper left corner of the main menu screen (the screen with the rotating model in the middle).

1. Start AFPD with only the original USB Interface Cable or USB Game Commander connected. If the USB Interface Cable is connected without a transmitter you will get a message saying that no Tx was detected - Click OK
2. Connect the USB Slave Game Commander to a free USB port, wait a few seconds and then click on “Calibrate”.
3. In the “Input Device” window click on “Refresh”. You will then see “USB Dummy GC #0” - highlight this and click on “Properties”.
4. Calibrate as you would with any controller (see manual).
5. Click on “Controls”. At the bottom of the window click on “New”.
6. On the left lower section of the window click on the circle displayed at the “USB Interface/Game Commander #2”.
7. Proceed with the “Channel Assignment” - Click OK when finished.
8. At the “Aircraft Control Settings” window you will see “New USB Interface/GC #2” - Assign to Aircraft 1 or 2 and click OK
9. You are now ready to fly.