Ability to restrict which groups and/or users have access to Team Calendars

Our primary Confluence instance is used by our employees and some of our business partners. Partners have varying levels of access within Confluence, depending on the nature of the business relationship.

Currently, Team Calendars is available to any logged in user and by default any new calendar is available to all users. It's great that it's possible to set view and edit restrictions on individual calendars, but it's difficult to ensure that users across the company will put the proper security on calendars they create.

We would like to be able to restrict Team Calendars access (in its entirety) to specific groups and/or users, similar to Global Permissions in Confluence. This would allow us to specify that only employees and select partners have access to Team Calendars and reduce concerns around accidentally sharing information too broadly.