How to configure additional options to 'Source' list of values on job application?

Summary:

I am looking to configure additional values for the job application’s dropdown list to match the dropdown list in the Create Candidate page. How can I do this?

Content (required):

Job Application page 'Source' dropdown list:

Create Candidate page 'Source' dropdown list:

As you can see, the lists do not match. I am looking to add the options from the Create Candidate page list to the Job Application page list.

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

Code Snippet (add any code snippets that support your topic, if applicable):