FoW - (Need help)

[P-38L]

Hello to all

Does any one know how to use the FoW feature? I know how to set a recon plane, but I don't know how to make it the way it should work. How can I set a trigger option to an airplane waiting on the airport?

I have read the manual where all the Fow features are explained but nothing is working.

If any one can help me, or have a video on YouTube explaining how to set the Fow feature.

Thank you in advance.