Not to be confused with Source, a candidate's Origin defines how the candidate entered into Lever. Origins are one of five fixed values:
Each candidate has one (and only one!) point of origin.
The Origin of a candidate can be thought of as a "higher level" source category (eg. multiple sources roll up to one origin).
Here's a difference between Origin and Source: https://help.lever.co/hc/en-us/articles/205750965-What-s-the-difference-between-a-candidate-s-Origin-and-Source-