No, it's not necessary for people to register before they are able to take a quiz. It's what you want.
Under the tab "User Management" in the menu of your quiz, you will find the registration options we have.
First you'll select IF you want people to register in the "user details" setting. The options are:
And then you can select HOW you want people to register. The options are:
As a last step you can then set WHEN you want people to register. The options are:
If you're not sure which setting would work best for your situation, please don't hesitate to contact us. Just send your e-mail to firstname.lastname@example.org.