Articulate 360 Graded Question - Setting correct responses for freeform drag and drop

Hi 

This is a very silly question, but I can not work it out. For some reason, on my laptop, when I add a graded question (Screen 1) I am able to add in the question and set correct responses. 

When I change views (Screen 2) I can not find how to flick back to the layout as shown in the attached screen 1. 

So in my freeform drag and drop question, I am unable to set what is the correct drop item and what is incorrect. 

Hope that makes sense. 

Cheers and thanks in advance for your help.