Update howto-authentication-use-email-signin.md

Author: Justinha

articles/active-directory/authentication/howto-authentication-use-email-signin.md

@@ -6,7 +6,7 @@ services: active-directory
 ms.service: active-directory
 ms.subservice: authentication
 ms.topic: how-to
-ms.date: 07/07/2021
+ms.date: 06/17/2022
 
 ms.author: justinha
 author: calui
@@ -43,7 +43,7 @@ Here's what you need to know about email as an alternate login ID:
 * The feature supports managed authentication with Password Hash Sync (PHS) or Pass-Through Authentication (PTA).
 * There are two options for configuring the feature:
     * [Home Realm Discovery (HRD) policy](#enable-user-sign-in-with-an-email-address) - Use this option to enable the feature for the entire tenant. Global administrator privileges required.
-    * [Staged rollout policy](#enable-staged-rollout-to-test-user-sign-in-with-an-email-address) - Use this option to test the feature with specific Azure AD groups. Global administrator privileges required.
+    * [Staged rollout policy](#enable-staged-rollout-to-test-user-sign-in-with-an-email-address) - Use this option to test the feature with specific Azure AD groups. Global administrator privileges required. When you first add a security group for staged rollout, you're limited to 200 users to avoid a UX time-out. After you've added the group, you can add more users directly to it, as required.
 
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