No, it has to be specified in the panel.cfg file. Once that happens it will come up with the Shift-Number keystroke that is specified there.
Many panels use this logic:
Shift-1: Main panel
Shift-2: Radio panel
Shift-3: GPS
A typical entry in the panel.cfg file is:
At the top of the file:
[Window Titles]
Window00=Main Panel
Window01=Radio Panel
Window02=GPS Window
(there may be others below that)
And in the body of the cfg file:
[Window02]
Background_color=16,16,16
size_mm=545,354
position=8
visible=0
ident=GPS_PANEL
gauge00=fs9gps!gps_295, 2,2,545,354
And somewhere in the main panel listing:
gauge54=SimIcons1024!GPS Icon, 158,748,19,19
(numbers will be different - the first two are position, the second two are size)
All Window and Gauge numbers should be consecutive in each section.
Hope this helps,