The symbol used in the diagram is basic. You will assign
a different symbol to the couple nodes to graphically represent more
data, such as the marital status and the date of the marriage.
To assign a different symbol to the couple nodes:
Select the node.couple rule
in the Style Rules pane.
Click Assign Symbol at
the bottom of the Styling Customizer.
The Assign Symbol dialog box is displayed.
Select the Couple symbol in the Genealogy category.