I have a questions about choice fields. I am using a content control combo box in a word document which users fill out depending on a document topic. I would like to be able to easily manage that choice list, so instead of using the text box in the Column Settings to change the choices, I'd like to use a list that is already managed. Is this possible?
I think what you want to use is a data connection. If you are editing the form with infopath you can retrieve the information from a field in antother and use them as values in a control for example a dropdown. Check this Link