Restricted Role Assignment Policy
Rename the default role:
Set-RoleAssignmentPolicy “Default Role Assignment Policy” -Name “Unrestricted Role Assignment Policy”
Create new
New-RoleAssignmentPolicy -Name “Restricted Role Assignment Policy” -Description “Only base options.” -Roles MyBaseOptions -IsDefault:$True
If created grafical, you need to set it default this way:
Set-RoleAssignmentPolicy -identity “Restricted Role Assignment Policy” -IsDefault:$True
All new users get the new policy, but you need to run this command on everyone else:
set-mailbox usertest -RoleAssignmentPolicy “Restricted Role Assignment Policy”