Update New-AvailabilityConfig.md

Author: chrisda

exchange/exchange-ps/exchange/New-AvailabilityConfig.md

@@ -14,7 +14,7 @@ ms.reviewer:
 ## SYNOPSIS
 This cmdlet is available only in the cloud-based service.
 
-Use the New-AvailabilityConfig cmdlet to create an availability configuration. An availability configuration specifies a set of tenant ids representing organizations to exchange free/busy information with. 
+Use the New-AvailabilityConfig cmdlet to create an availability configuration. An availability configuration specifies the Microsoft 365 organizations to exchange free/busy information with. 
 
 For information about the parameter sets in the Syntax section below, see [Exchange cmdlet syntax](https://learn.microsoft.com/powershell/exchange/exchange-cmdlet-syntax).
 
@@ -24,6 +24,7 @@ For information about the parameter sets in the Syntax section below, see [Excha
 New-AvailabilityConfig 
  [-AllowedTenantIds <MultiValuedProperty>]
  [-Confirm]
+ [-OrgWideAccount <SecurityPrincipalIdParameter>]
  [-WhatIf]
  [<CommonParameters>]
 ```
@@ -35,16 +36,15 @@ You need to be assigned permissions before you can run this cmdlet. Although thi
 
 ### Example 1
 ```powershell
-New-AvailabilityConfig -AllowedTenantIds "d6b0a40e-029b-43f2-9852-f3724f68ead9, 87d5bade-cefc-4067-a221-794aea71922d"
+New-AvailabilityConfig -AllowedTenantIds "d6b0a40e-029b-43f2-9852-f3724f68ead9","87d5bade-cefc-4067-a221-794aea71922d"
 ```
 
-This example creates a new availability configuration. In this example it is allowed to share free/busy information with the two other tenants as represented by the ids.
+This example creates a new availability configuration to share free/busy information with the specified Microsoft 365 organizations.
 
 ## PARAMETERS
 
-
 ### -AllowedTenantIds
-A comma seperated string with GUIDs representing the tenant ids of organization with home the free/busy information is shared with. A maximum of 25 tenant ids can specified.
+The AllowedTenantIds parameter specifies the tenant ID value of Microsoft 365 organization that you want to share free/busy information with (for example, d6b0a40e-029b-43f2-9852-f3724f68ead9). You can specifiy multiple values separated by commas. A maximum of 25 values are allowed.
 
 ```yaml
 Type: MultiValuedProperty
@@ -78,6 +78,22 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
+### -OrgWideAccount
+This parameter is reserved for internal Microsoft use.
+
+```yaml
+Type: SecurityPrincipalIdParameter
+Parameter Sets: (All)
+Aliases:
+Applicable: Exchange Online
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -WhatIf
 The WhatIf switch simulates the actions of the command. You can use this switch to view the changes that would occur without actually applying those changes. You don't need to specify a value with this switch.