Group Calendar

Hello, I have read through this thread because I am having some similar issues. I am attempting to set up a shared calendar so that my team can view our upcoming training schedule; i.e., who is participating in which trainings on which day. 

I tried out the Channel Calendar functionality in Teams, but this duplicates the meetings in Outlook, which is what we're trying to avoid. (We don't want to have to invite the entire training team to every training, cluttering our inboxes.) I thought maybe we could invite the Team Channel to our training meetings (which are all conducted via Teams) but this does not work, as the meetings do not show up on the calendar unless you create them there.

So now I'm trying to create a group in Outlook with all the trainers and potentially sharing the group calendar, as described in this article: https://www.marksgroup.net/blog/microsoft-teams-add-a-group-calendar-to-teams/. I thought that if I invited the group (via the group's email address) it would show up ONLY on the shared calendar, and not on every group member's personal calendar. Again, this is not the case: when you invite the group, you're inviting everyone in the group. 

Is there a way to create a shared calendar in Teams or Outlook to see ONLY certain shared meetings, and those meetings do NOT appear on everyone's personal mailbox? Can we share meetings on a case by case basis with the shared calendar so that they are visible to group members?