Merge pull request MicrosoftDocs#1815 from loskinski/patch-2

Update Set-OwaMailboxPolicy.md

Author: chrisda

exchange/exchange-ps/exchange/client-access/Set-OwaMailboxPolicy.md

@@ -474,13 +474,15 @@ Accept wildcard characters: False
 ### -ConditionalAccessPolicy
 This parameter is available only in the cloud-based service.
 
-The ConditionalAccessPolicy parameter specifies the conditional access policy for Outlook on the web. Valid values are:
+The ConditionalAccessPolicy parameter specifies the Outlook on the Web Policy for limited access.  For this feature to properly work, you will need to additioanlly configure a Conditional Access policy in the Azure Active Directory Portal.
+
+Valid values are:
 
 - Off: No conditional access policy is applied to Outlook on the web. This is the default value.
 
-- ReadOnly
+- ReadOnly: Users can't download attachments to their local computer, and can't enable Offline Mode on non-compliant computers. They can still view attachments in the browser.
 
-- ReadOnlyPlusAttachmentsBlocked
+- ReadOnlyPlusAttachmentsBlocked: All restrictions from ReadOnly apply, but users can't view attachments in the browser.
 
 ```yaml
 Type: Off | ReadOnly | ReadOnlyPlusAttachmentsBlocked