Originally Posted by
Jughead
I'm not sure what you're asking, exactly. The fix page works just like the 88, in that you could insert the FAF and enter a reciprocal course for increased s.a., but I don't think that's your question.
You can also enter a PBD into the fix page and extend a line in any direction (if you have a lot of time on your hands).
I think his question is how to (simply) make an extended centerline from the FAF which is LNAV interceptable. In most Boeings it's a simple process, make it the active waypoint and either enter the inbound course in the boxes or push the 6r button and execute.