Hey Donamy,
I hope this is not too simple an answer.
RPOP is the Shuttle's Rendezvous and Proximity Operations Program that is used for docking, yes?
Anyways:
To dock the Shuttle to the ISS using Pursuit MFD:
Select DOC. (Docking Relative Mode)
Select TGT and type in ISS. (Target = ISS)
LDK will already be set to 01 (Local Docking Port. Shuttle has only 1 port)
TGT and type 01. (Target ISS Port = 01)
Select NOR twice (to include roll alignment)
Select DIS and type 0 0 10. (Sets the X Y Z distances for 10 m off)
Select APD (Autopilot Docking) and watch it chew up fuel as it moves to position.
If you want to roll around for your tile check, select NOR = no roll.
A great addon, but you can use less fuel with manual docking