Assuming you're using the PC version ... The default first driver is
always the driver you have selected in the "quick race" settings.
(Main menu, go to "Game Options Menu" and then "Quick Race"). This
information is saved in your F1GP preferences file (updated by
choosing "Save Options" from the Game Options Menu).
If you want to select more than one driver as default (ie. for
multi-player games), you could check out my editor which runs under
Microsoft Windows. It's available for download at:
http://www.gamesdomain.co.uk/f1gp/
It covers the area of selecting human drivers pretty well.
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