Help needed !

I have just installed G3(with success). I am use to the G2 sim and miss
a few of G2 menu functions. I have played around with the G3 for about
5hrs to day and I still can not set the airplane to a new position on the
run way/ or change direction of airplane heading (I mean changing the
default setting of the airplanes position when you press the space bar).
This change was so easy on G2. I also printed the 253 page G3 manual
hoping I would find the reference with ease, after an hour I am still looking.

Need help. Any feedback/guidance will be very welcome.

Thanks

Brgds
JGZ