Completion of Block in Rise with a Storyline block

Hi, this may be a very basic question, but I have a Storyline block that I am embedding in a Rise course and it simply has an image where I want the learners to click on three parts of the image to display extra information. I want to make sure they can't continue with the Rise course until they have clicked on all three elements...how can I do this?

 

Thanks in advance :)

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