The Requirement Management Integration feature adds a Links tab in the Properties view
for all model elements. From the Links tab, you can create links from the model element to
requirements.
About this task
The Links tab in the
Properties view
appears only for elements to which UML URL elements can be added.
Procedure
- In the Project Explorer view, locate the element for which you want to
create a link.
- Open Properties view and click the Links tab.
- Click the Add a New Link
button. 
- In the Add Link dialog box, choose the type of link to create in the
Link Type drop-down. If you have multiple connections and/or project areas,
use the Project drop-down list to select the project area that contains the
requirement you want to link to. Use the Type drop-down list to select
whether you want to link to a requirement or a collection of requirements.

- The area in the Link to group is populated by DNG. You may have to resize the dialog to make it
fit. You can use the features provided by DNG in this dialog to search for the target requirement or
collection. After you find the requirement or collection, select it and press the
OK button to create the link. The created link appears in the Links tab in
the Properties view.
- Use the Delete Link toolbar button in this view to delete a selected
link. Use Delete All Links if you want to delete all links from the model
element.
What to do next
You can double-click on a link to navigate to the target requirement or collection in DNG.
By default, it will be opened in the internal web browser, but you can use an external web browser
instead by changing the preference in
General – Web Browser.