Let me add my .02....
As was mentioned before, you'd better brief this before you do it AND you'd better get it figured out (how to set it up) before you do it.
Next time you're in the sim you'll want to do some work on this. Lots of ways to skin a cat. Don't know what the Encore + has in it FMS wise, but in the 4000 with Epic Primus the ideal way (read - the way Pickle would do it
) is to split the FMS units into initiated transfer with the filed route and cleared SID or DP in the PF box, and the APG engine out procedure in the PM box. If you pop one at V1 and need the APG, the PM can send the APG over to the PF. Once you're under way and above all the rocks and nothing quit, synch 'em back up. Which leads me to my next point. SAVE YOUR F-ING FLIGHT PLANS!!!! I sure do love it when someone synchs the boxes the wrong direction and then nobody knows where the machine is headed.
Anyway - this APG (or other similar type of airport analysis) is an amazingly wonderful tool but you want to be fully spooled up on how to use it before you actually need it. In other words - sim training AND in house company training on how you want it done.