Quiz Groups

I need a user to be able to take only a couple of Groups of questions, and skip other groups.  And I need them to be able to see the groupings with names for each group so they know which ones to take and which ones to Skip.  Example would be one quiz with 4 groups of questions, entitled "All," "Users 1," "Users 2," and "Users 3."  I need one associate to be able to answer all of the questions in the "All" and the "Users 2" groups, and get a score.  While someone else would answer the questions in the "All" and "Users 3" groups, and get a score.  Is this possible?  It does not appear to be but I thought I'd ask everyone out there.