How does reprice occur on P4210 Order Entry when UORG changes?

I am trying to trigger a reprice of UPRC anytime a specific field (URAT) is changed during the Order Entry process in P4210. I see that when both the Quantity Ordered (UORG) field and the URAT field changes, it triggers the UPRC to update accordingly. Rather than have the user change the UORG and the URAT every time, I would rather just change the URAT field and have the price update when the user steps off of the line. I see references to Kit Processing in the UORG, but I am unfamiliar with what a "kit" is or if it even contributes to the reprice functionality in F4211 Edit Line.

Thanks in advance!

Also, this is on JDE