Just for the record, you are talking about the family graph shown in image 3, first post, taken from another program.
With two different partners it looks like this: The person in the horizontal line of children is on top and the first spouse of this person below, connected with a line on the side. Then below the spouse follows the chain of their offsprings connected with direct lines from box to box. For the second spouse the line on the side is extended reaching down beyond the block of the children with the first spouse. Finally below the second spouse there is the chain of children deriving from the second relation. See here:
Family Graph Example 2