Probably because I have just started learning the Airbus A-320 (Mod), but I can't figure out how to choose an Instrument Approach as you near your destination.  One has probably been selected at the World page, but what if ATC assigns a different one.?

Dave Hinson

Dave, in the MCDU, click on the flight plan page, then click on the button next to your destination airport. From there, you should see a selection for “arrival” - click that, and you’ll be taken to a page where you can select the runway, star, transition, and via.

Thanks - I also found a You Tube video showing this process.

Wish there were a manual for this aircraft.  However, you may also find a YouTube video for almost every procedure in this aircraft.  Thanks, YouTube submitters.

Dave Hinson