Creating Bookings calendar with PowerShell, options missing for the owner to manage

In the new MS Bookings, when we create a calendar using PowerShell using this command - New-SchedulingMailbox -Alias -ReplyToAddress -DisplayName -Name -PrimarySmtpAddress -Owner -BookingServiceName, the newly added Owner does not get an option to Add New Staff Members or make any changes to the settings. All the options are grayed out.

When I switch back from the New version to the Old, we see all those options.

This was never the case with the older version of Bookings where we use the same PS command and the owner can then add staff and make changes to the settings.