Merge pull request MicrosoftDocs#8654 from MicrosoftDocs/chrisda

Update MailboxRegion parameter

Author: chrisda

exchange/exchange-ps/exchange/New-UnifiedGroup.md

@@ -472,7 +472,9 @@ Accept wildcard characters: False
 ```
 
 ### -MailboxRegion
-This parameter is reserved for internal Microsoft use.
+This parameter is available only in the cloud-based service.
+
+The MailboxRegion parameter specifies the preferred data location (PDL) for the Microsoft 365 Group in multi-geo environments.
 
 ```yaml
 Type: String

exchange/exchange-ps/exchange/Set-UnifiedGroup.md

@@ -887,7 +887,9 @@ Accept wildcard characters: False
 ```
 
 ### -MailboxRegion
-This parameter is reserved for internal Microsoft use.
+This parameter is available only in the cloud-based service.
+
+The MailboxRegion parameter specifies the preferred data location (PDL) for the Microsoft 365 Group in multi-geo environments.
 
 ```yaml
 Type: String