1. Go to Analysis > Information Library.  Click Add an ad-hoc query.  Select the source view of Constituents and click Ok.
  2. On the left, expand Groups Belonging to, then click on Constituent.
  3. In the middle, select Last/Organization/Group/Household name and move that to Include Records Where.  Set the criteria to equal to the group name.
  4. On the far top left, click Constituents and output information you want to see about the constituents in a group in the Results Field to Display section.
  5. Go to the Set Save Options tab.  Name and save the query.