Ok so there are 2 codes that we are dealing with here.
What Vince is referring to is Third Party call forwarding, this is when you forward another number other than your own.
{FAC} {Number to Forward} {Destination}
So in Vince's example (looks like he uses the same FAC's as the sample in the help files)
*65 - Call Forwarding - Follow Me - Third Party Code, 2000 is what he wants to forward and 6000 is the destination.
*65 2000 6000
The way I would imagine it is forwarding from the actual station that wants to be forwarded.
For this you would just use the "Call Forwarding - Follow Me" code from the extension
What is your FAC for Call Forwarding - Follow Me?
You then dial {FAC} {Destination} if it works you hear a blip, blip ...... blip, blip as confirmation.