The platform allows its users to hide the marks obtained by a candidate to hide from them. This is how it can be done:
Step 1: Log into your CG account
 Step 2: Click on Manage Tests on the Menu bar 
 Step 3: Click on Test Template
 Step 4: Click on Edit next to the concerned test 
 Step 5: Select the Section for which you want to hide the marks
 Step 6: Click on Advanced Settings under Section Settings on right side of the window
 Step 7: Select Hide Marks From Candidate