Update Add-AvailabilityAddressSpace.md

Updates to cmdlet based on changes to free/busy sharing using new auth type

Author: TariqSharif-MSFT

exchange/exchange-ps/exchange/Add-AvailabilityAddressSpace.md

@@ -64,14 +64,22 @@ Add-AvailabilityAddressSpace -ForestName example.contoso.com -AccessMethod PerUs
 
 This example is useful with a trusted cross-forest Availability service. The contoso.com forest trusts the current forest and uses the service account (typically the local system account or the computer account) to connect to the contoso.com forest. Because the service is trusted, there is no issue with authorization when the current forest tries to retrieve free/busy information from contoso.com.
 
+### Example 4
+```powershell
+Add-AvailabilityAddressSpace -ForestName example.contoso.com -AccessMethod OrgWideFBToken -TargetTenantId “9d341953-da1f-41b0-8810-76d6ef905273" -TargetServiceEpr “outlook.office.com”
+
+```
+
+This example is for setting up sharing of free/busy information for Exchange Online. In this example you are requesting to read free/busy information of example.contoso.com with tenant ID 9d341953-da1f-41b0-8810-76d6ef905273 represtend by ForestName and TargetTenantID parameters. TargetServiceEpr is set to Exchange Online endpoint depending on where the requested tenant is loated in the cloud.
+
 ## PARAMETERS
 
 ### -AccessMethod
 The AccessMethod parameter specifies how the free/busy data is accessed. Valid values are:
 
 - PerUserFB: Per-user free/busy information can be requested. The free/busy data is accessed in the defined per-user free/busy proxy account or group, or in the All Exchange Servers group. This value requires a trust between the two forests, and requires you to use either the UseServiceAccount parameter or Credentials parameter.
 - OrgWideFB: Only default free/busy for each user can be requested. The free/busy data is accessed in the per-user free/busy proxy account or group in the target forest. This value requires you to use either the UseServiceAccount parameter or Credentials parameter.
-- OrgWideFBBasic: This value is reserved for internal Microsoft use.
+- OrgWideFBBasic: Only specified for free/busy sharing between tenants that are all in Exchange Online.
 - InternalProxy: The request is proxied to an Exchange in the site that has a later version of Exchange.
 - PublicFolder: This value was used to access free/busy data on Exchange Server 2003 servers.
 
@@ -196,9 +204,12 @@ Accept wildcard characters: False
 ```
 
 ### -TargetServiceEpr
-This parameter is available only in the cloud-based service.
+The TargetServiceEPR parameter specificies the Exchange Online Calendar Service URL of the external organization whose free/busy informaton you are trying to read. 
+The following are the Exchange Online Calendar Service URLs for external organization in different Exchange Online environments
 
-{{ Fill TargetServiceEpr Description }}
+- Microsoft 365 or Microsoft 365 GCC: outlook.office.com
+- Office 365 operated by 21Vianet: partner.outlook.cn
+- Microsoft 365 DoD or GCC High: outlook.office365.us
 
 ```yaml
 Type: String
@@ -214,9 +225,9 @@ Accept wildcard characters: False
 ```
 
 ### -TargetTenantId
-This parameter is available only in the cloud-based service.
+This parameter is available only in Exchange Online.
 
-{{ Fill TargetTenantId Description }}
+The TargetTenantID parameter specifies the tenant ID of the target target whose free/busy data must be retrieved
 
 ```yaml
 Type: String