Hi @lglen2,

@SusanNiemeyer is correct that quizzes are always individual assignments in Canvas right now.  You are also correct though that an exact "matching" activity is only available in quizzes.  I'm afraid the assignment might need to be redesigned somehow into something that would work for groups, which is generally text submissions or file uploads at the time of writing this answer.

I know this may not be the answer you wanted to receive, but I hope the info helps!

-Chris