If you edit your family tree in Family Tree Builder, please read the following article: How do I show a divorce in my Family Tree Builder tree?
Divorces, like marriages, births, deaths and other events are recorded as facts in the tree.
In order to show a divorce between two people in the tree, add a divorce fact for the couple.
Adding the fact for one of the two partners will add the fact for both of them.
To add a fact, click on the ADD link in the facts section.
Select divorce. Select the partner and add other information such as date or description. Click OK.
The dotted line between the partners represents the divorce.