I don't ever remember being able to do this without calling customer services on 202 and giving them the numbers to add for you.
Do let us know how you're getting on with this @Busterbob, were you able to contact CS ok in the end to do this?
Hi , I contacted customer services ( online section) . My New Best friend assured me that he had completed my request but said it would take 24 to 36 hrs to change ?? , Sadly as of now 24 hrs later still no joy which is very disappointing. I will call 202 soon I’m not a happy bunny