Households
You can organize your people records by household. Doing so allows you to identify all family members at a glance.
One person in a household is designated "head-of-household". When adding a new person, you can assign that person to an existing household, or you can create a new household with the new person as head-of-household. You can also move people into different households, reassign the head-of-household, and view a directory based on households.
You can find more information about managing households here.