1. From the Basic section of the Modeling Palette, select the Generalization icon .
2. Click inside the ATM class element, and then click the EntryStation class element.
The Select Methods to Redefine dialog box appears.
3. Select the checkbox next to the ATM node to select all the methods and click OK.
The selected methods are added to the ATM class element and a generalization link snaps in place between the two class elements.
4. Draw another generalization link by first clicking CashierStation, and then clicking EntryStation.
5. In the Select methods to Redefine dialog box, select the checkbox next to the CashierStation node to select all methods and click OK.
6. Right-click anywhere in the Diagram editor to deselect the Generalization icon.
7. Your finished diagram should look similar to the following figure.