After you have created an OS configuration, you can create EDTs or Eligible Device Tables under it. Select an OS configuration (MVS only) and press the Create EDT... button in the Operating System Configurations dialog. The Create Eligible Device Table dialog opens, allowing you to specify an EDT name and description. After you press OK, the new EDT will appear in the list box of the Operating System Configurations dialog, under the selected OS configuration.
Figure 1. Create Eligible Device Table dialog