Superfamily 

In the Show Features window, turn on Superfamilies.

Superfamilies are groups of families that are somehow related.  Some examples would be all patients in a particular nursing home, a split family due to divorce, members of an athletic team getting mouthguards, etc.  Being part of a superfamily does not currently affect billing.  Each regular family is still billed separately, and the superfamily is just present for informational purposes.

In the Family module, in the toolbar, click Add.