To work with an installation's classes, you must:
Select the Classes option from the Installations menu in the Installation Program Manager.
Select the Classes option from the contextual menu in the Installation Program Manager.
This dialog box lets you manage the resources assigned to an installation.
Lists
Classes
List of all the classes in the current installation, sorted in ascending order by class name.
You can sort according to the description by clicking the column header.
Multiple-selection list.
Context-sensitive menu
Assign
This option opens a dialog box that displays the classes in the environment that can be assigned.
Release
This option is used to release the selected classes from the installation.