How can the candidates book slot for themselves?

How can the candidates book slot for themselves?

Step 1: When the test is published, candidates can view the 'Book Slot' option through 'My Test' section from the candidate portal.
Step 2: Candidates will see available dates in sky blue color and they can click on the preferred date and timings to attempt the exam, then click on 'Schedule':
 
Step 3: A slot summary message box will appear for confirmation, click on 'Done' to book the slot.
Step 4:  The test will appear with the option of 'Start Test' for candidates: