If the candidate is in the 'Pending' tab, clicking the image of the selected candidate row will take you to a detailed profile of the candidate.
Pending Tab -> Click on Image on the selected candidate -> Opens up the Detailed Profile of the Candidate
If the Candidate has been invited to an Assessment, the candidate will now be in the 'Candidates' tab.
To view details of the candidate:
'Candidates' Tab -> Click on Image of Selected Candidate -> Click on 'About' on the left panel -> Opens up the Detailed Profile of the Candidate