I like @tpavlic 's post about a shortcut to mirror group membership with section membership, but it only offers the functionality of differentiating quiz assignments to individual students. It is more of an administrative function, and less of a pedagogical function. The functionality I am looking for is team/group quizzing the functions the same way that a group assignment functions - and the learning objective is collaboration, peer instruction, consensus building, etc.
Team/Group quizzing is wonderful for students for promoting discourse and community. It also switches up the perspective on assessment overall, which is overturning lots of preconceived notions about how students learn and how they demonstrate mastery. Perhaps not enough votes happened for this functionality in Canvas Quizzes initially because the world was still focused on high-stakes assessments with "integrity" as the gold standard. We have come a long way since then - Canvas please take note.
I guide instructors, for example, on how to implement TBL, and the GRAT phase is not doable in Canvas at this time. Consider that this is a feature that would support students directly, by shifting the assessment further in their direction to more thoroughly support learning and retention.