3D Design Tool Buttons not working

Question

Good Morning 
 I am currently on a 5 day Bentley Substation Course offered by Bentley. 2 attendees of the course are having problem where we cannot select the following tools from the 3D Layout design tool bar: 
 
 Manage Project Reference Point 
 Place Grounding Grid & Segments 
 
 Can someone offer a suggestion as to how to rectify this?

Matt_P · Accepted Answer

Are the affected attendees using dual monitors? If so, try moving the main Bentley Substation V8i application window to the other monitor, then restart Substation.