Set the default permission that existing users have for new sub-calendars

As the calendar administrator, you can choose the default permission assigned to any new sub-calendar for users and shareable links.

When you add users or create shareable links, you assign their level of access to each sub-calendar. For each user or link, you can assign one permission level for all sub-calendars or assign different permissions to selected calendars. 

You can also set the default permission applied to any new sub-calendar(s) you create. 

Set a default permission level for newly created sub-calendar(s)

For each existing account based user and shareable link:

1. Go to Settings > Sharing.
2. Click the Edit icon next to the user/link.
3. Scroll to the Calendars Shared section.
4. Adjust the Default Permission applied to new sub-calendars.
5. Click the green Save button. 

When you add new account users or create new shareable links, be sure to adjust the default permission to the desired access level. The default permission will be automatically applied to any new sub-calendar(s) created. 

For example, if you set the default permission to read-only for a calendar user, that user will automatically be given read-only permission to the new sub-calendars.