In a design project, you can create a link to another node, or a shortcut of an element of the same or another design project (these projects must be of the same UML version). 

In an implementation project, you can create a link to another node or a shortcut of an element of the same project.

1. On the diagram Tool Palette, click the button for the type of link you want to draw in the diagram. The button stays down.
2. Click the source element.
3. Drag to the destination element and drop when the second element is highlighted.