Hi,
I can help answer your question. You are asking to have one Calendar that depending on what group you are in sees only events for that group, correct?
Unfortunately, that feature is not part of our plugins. There maybe ways to do that with a plugin such as Members, but it does involve some customization and playing around with it to get it to work.
I could not find another plugin or some coding that I thought would help you get to your goal.
Does that answer your question?
Let me know if you have any more questions or I did not read it correctly for what you are looking for.
Thanks