Relationships can be added either through Actions from the Wall Chart or through the Relationships tab on a user's profile.
Adding Relationships Through Actions
To add a relationship through Actions, select Actions then New Relationship.
Use the Search People option to find the individual you want to show a relationship with and enter any notes on the relationship. When finished, click the Add Relationship button to save the information.
Adding Relationships Through Relationships Tab
To add a relationship through an individual's profile page, click on the person in the wall chart and move over to the Relationships Tab. Use the "Add Relationships" button to create a new relationship, following the same steps as the screenshot above.