To move an applicant from the Job they are currently in to another Job, start by clicking the three-dot button on the far-right side of their row.
Select, Move to another Job.
This window will appear. First, select the Location that the Job you wish to move the candidate into is in.
Next, click the Job within that Location that you want to move the applicant into. Click Move to New Job.
Once you select Move to New Job, the applicant will disappear from the Job they were in at the beginning and reappear in the "Applied" Stage in the new Job you have selected.