Select faces-config.xml in the Project Explorer of the J2EE perspective.
The JSF Application Configuration editor opens.
Select the Other tab of the editor.
The Other page appears.
Expand the State Manager section.
The Find Type dialog box opens.
Type the first letter of the type you want to use in the Select a type field.
A list of available types beginning with the letter you typed
appears in the Matching types list.
Select the type that you want to use and click OK.
The state manager is added to the list.