The Fly-now section permits to choose a pilot name or to create a new one, to choose an airport and an aircraft before take off.
The dialog box below appears :
To get a Pilot name which already exist, click with the left mouse button on the first box button (in front of pilot), to create a new pilot, simply click with the left mouse button on the text area and when the text area is cleared, enter the new name, then press return key.
To select an aircraft which must already exist, click with the left mouse button on the second box button (in front of plane).
To select an airport which must already exist, click with the left mouse button on the third box button (in front of airport).
When your selection is done, click on OK button (at the right lower bottom of the picture) or click on CANCEL button to return back.
Note:
When you click on OK button you start the simulation program which loads the given features (aircraft, airport, pilot), you could see the loading progression in a red bargraph at the bottom of the screen, but in relation with your aircraft panel complexity the loading time could be long, please be patient.