1. Navigate to Activities > Scheduling > Calendar > Choose the Group Calendar from the Calendar dropdown.
2. Click the line for the specific day > Create New Event button.
3. Set all the fields on Event form.
4. Navigate to Attendees subtab > Remove the Name of the Group from the list of Attendees.
5. Click Save.
Result: The Event that is created is not shown in the Group Calendar.
To make all Events created from the Group Calendar show, all Organizers must make sure that the Group name is included the Attendee list.