Candidates can be moved between different job positions in Collage.
To move candidates between positions:
1. Click on "Recruitment" in the left-hand sidebar
2. Click on the job the candidate is currently being considered for
3. Click on the stage the current candidate is assigned to
4. Click on the candidate, then click the "Move candidate" button in the candidate panel on the right
5. Select the position you want to move them to from the dropdown, and click "Save"
All done! The change will be visible in the timeline.
Note that moving a candidate to a different job position will place them in the "Sourced" stage by default, where they can be moved to another stage.