Hide some of your field's multiple choice options based on value in other multiple choice

[MichaelG]

This is a related entry that I am investigating…

Display radio button list based on another multiple selection field in real time

This might be useful or not but I believe it's worth mentioning. Scenario: I have an object crew with a one to many connection to the object Account (crew members). I also want, when I create or edit a crew, to nominate a crew manager only along the crew members. I also want this to happen real time: when I add / remove members through the drop down list (crew members), I want the crew manager field (which is a radio button list) to have available only the crew members selected. The code: // …