1. From the Basic section of the Modeling Palette, select the Extend icon .
2. Click once in the Withdraw Cash From ATM element, and click again in the Withdraw Money element.
A link labeled is drawn with the arrow pointing towards the Withdraw Money element.
3. Repeat steps 1 and 2 to draw Extend links between the following Use Cases:
Deposit Cash at ATM > Deposit Money
Process a Loan > Apply for Loan
4. Right-click anywhere in the Diagram editor to deselect the Extend Link icon.
5. To rearrange the diagram, click the Orthogonal Layout button on the Diagram toolbar and click Yes in the Layout warning dialog box.