How do you enter divorce information about a person?
You have basically two choices: you can edit the couple relationship and add an event of type "divorce", or you can add a custom event to each person's Other Information section. The former only needs to be done once, but is nearly invisible: the couple relationship in the Family Members section only shows the couple event with the earliest date, which by definition is not the divorce (unless the marriage is deleted or not entered). In order to see that the divorce exists, you'd need to edit the couple relationship. The custom event, in contrast, needs to be entered twice, once for each profile, but it is visible without extra clicks.