Step 1: Go to "Left hand side Menu" -> Recruitment -> My Applicants.

Step 2: Please scroll the page and find Details cloumn where you have to click on view option.

Step 3: Click on "+ More" button -> "Assign Another Job" (Please refer attach screenshot).

Step 4: You can select the jobs to assigned and click on assign button.

Please make note that you can select multiple jobs for that candidate.