Hello

I'm relatively new to FSX, so the answer to my question may be quite simple.

I'm flying the standard Caravan that came with FSX and it works fine, along with the GPS that I like to use.

But I can't for the life of me find how to set the auto-pilot nav mode to couple with the GPS, as opposed to with the VORs.

In all other aircraft, I have no trouble doing this - just hit a NAV/GPS button usually somewhere on the panel.

Can it be that this NAV/GPS option is not available with the FSX/C208B caravan, or am I simply not finding it?

Thanks in advance

Ron