When first logging on to OMEGAMON for CICS, you will notice that your regions are organized into several CICSplexs based on whether you have any CPSM CICSplexs or by SMF id of your LPAR names. In this video, the default organization is explained along with how to change the default or how to organize your regions into CICSplex based completely on your own preferences.
If you missed the video on getting-started-with-ibm-omegamon-e3270-ui, you can watch it here
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