See Track different groups taking a quiz. You can also create a separate section for collecting emails and names. To collect names, create a question that asks people to enter their names. If you turn off Restrict to users in your organization and its trusted organizations, people can enter any email address.
Note: If you turn on Restrict to users in your organization and its trusted organizations, this automatically collects the person’s organizational email address (that they are signed in with). Control who can respond-Click Settings Responses and turn Restrict to users in your organization and its trusted organizations on or off.Turn on email collection-Click Settings Responses turn on Collect email addresses.To manage how responses are collected, open a quiz and choose an option: If you don’t limit respondents, then people can respond to the quiz using any email address. That way, only people who have an email that’s associated with your organization can respond to the quiz.
You can limit respondents to people in your organization. To identify each respondent and send quiz results or feedback, you can collect email addresses and request individual names.