Which IP group do I create?

I have a question about the Multicast group creation and assignment. How do I know what group to make? I am trying to clean up a botched Multicast issue configuration and I am still pretty new to multicasting and your material has been great. But I have multiple groups showing up on my L3/L2 switches but no interfaces are assigned to a multicast group or an RP. I see you use, but I have,, and, how do I know what group to create? Or if I add a groups to an Interface will all Multicast address be assigned to that group?

Hello Patrick

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