It cannot be forced to see a calendar of a group, user or resource.
In addition to Yann’s approach, maybe that would be a solution(?):
Create a resource and set the appropriate permissions. Users can then view the resource calendar. You can create a favorite for quick access for all users (group assignment).
You could also set this so that the resource cannot be booked if it is occupied. You could then also see who has booked.
Or you can create a user and share his calendar with the default group. So everyone can set appointments in it…
You’ll have to see what suits your needs best.
Beyond that still quite important:
Please update to the current version!: