Here is an example on how to use the Family entry type.
Say we have a family, the Doe’s.
First, lets start with one of the parent’s, John. Create a new Individual entry for John and put in all his personal info.
Second, copy John and change the first name to Jane and add/change any info that relates only to her for example her birthday.
Third, do the same for Girl and Boy.
Now create a new entry using the Family type. For the Family Name enter something like “Doe, John & Jane” and then click the “Add Relation” button for each member in the family, in this example, four times. In the first column of drop downs select each family member and in the second column of drop downs select their relationships.