Creator drop down assistance.. I'm sure this is needed by someone else too
In Creator I need help not selecting a drop down item if I have already used it. I have a list of phone numbers and also a list of extensions(a few thousand. I want my list of extensions to be associated with each phone number. After I pick a number I want to see only the extensions that belong to it. After I pick the extension I want it to be removed from my drop down, or marked so I know I have used it and don't pick it again. What are my options?