Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
You can change it via PowerShell script, but you will have to adjust this for any new user as well. Here's an example:
$calendars = Get-Mailbox -RecipientTypeDetails UserMailbox | Get-MailboxFolderStatistics | ? {$_.FolderType -eq "Calendar"} | select @{n="Identity"; e={$_.Identity.Replace("",":")}}
$calendars | % {Set-MailboxFolderPermission -Identity $_.Identity -User Default -AccessRights LimitedDetails}
There are many articles out there that give you detailed instructions, look them up if you need more information.