There are two methods to create Relationships:
The faster option is via drag & drop and is possible only when both objects are in the same folder.
The "Set Relationship" dialog opens, with the two selected objects.
The Relationship is created and displayed in the frame below the objects.

The other option to create Relationships requires additional steps but it allows you to create Relationships with any object in the workspace.
The following steps will guide you through creating such Relationship.
Select "New Relationship".
Note:
If the frame is not visible, click on the small button on the top right corner of the object frame to open it (See the cursor in the below screenshot).
The "Set Relationship" dialog opens.
The "Select Object" dialog opens.

The "Object Types" dialog opens.

In this example, we are creating a Relationship between a MS Word file and a Discussion about the file.
Since our original object was the File Object we want to select a Discussion Object to set the Relationship.
Once you select a certain object type, all objects of this type in the entire workspace (not only the active folder) are displayed.

The "Set Relationship" dialog opens again, this time filled with the two selected objects.

Delete
To delete a Relationship, highlight, right-click it and select the "Delete" option.
Notes: