Just found this https://community.articulate.com/discussions/rise-360/quiz-credit-in-rise-360 which essentially asks the same thing. In fact, I found a number of posts on the same subject, with the same outcome. Unless anything has changed, or anyone can correct me, I'm going to assume this is still not possible.
Hi there, David. I'm sorry for the delay in replies, here!
You're right -- it's not possible to track more than one quiz in Rise 360. Navigation control by requiring a passing score on a quiz to continue is the only way to ensure a minimum score in each quiz before considering the course complete at the end.
I'll tag this discussion for updates if we make a change that will help.
Thanks Crystal.
