Talent Community Sign Up, where does Preferred Job Function populate from?

Summary:

As outlined in the implementation guide, Set Up a Talent Community it is identified that Preferred Job Category and Job Location are rendered as part of the Talent Flow. The guide also emphasis that Preferred Job Function can be added.

Q: Where does job function populate from

Q: Can this also be rendered using TDS?

Version (include the version you are using, if applicable): 25C