How to lock visited markers in 360 degrees image?

I'm assuming that the marker is showing a layer when clicked. 

• I'd create a T/F variable for each question.
• Create a "you already answered that" layer
• You can use a T/F variable to track if they answered the question.
  • Example: varQ1answered = F. Adjust var to true when the quiz question layer is accessed.
• With the T/F variable you can trigger the marker to go to the question layer on the condition that the var = False, else go to the "answered" layer

Something like that