So you need to op-up 2 people from Y to J. 20 OLCI'd. What then is the second criterior you used to select those 2 out of the 20 - surname alphabetically? CIV? Status? Fare?

To be honest it could just be as much of a cr@pshoot as it always has been, especially if frontline staff aren't aware of the policy? (OT but how hard is it to send an email to all relevant staff? Or the managers who then inform their direct reports? Effective communication in a large company is not "go ask your manager" but should be the other way around.)