added note

windows/security/threat-protection/microsoft-defender-atp/microsoft-threat-experts.md

@@ -35,6 +35,9 @@ Watch this video for a quick overview of Microsoft Threat Experts.
 
 
 ## Before you begin 
+> [!NOTE]
+> Discuss the eligibility requirements with your Microsoft Technical Service provider and account team before you apply to the managed threat hunting service.
+
 Microsoft Defender ATP customers need to apply for the Microsoft Threat Experts managed threat hunting service to get proactive Targeted Attack Notifications and to collaborate with experts on demand. Experts on Demand is an add-on service. Targeted Attack Notifications are always included after you have been accepted into Microsoft Threat Experts managed threat hunting service.
 
 If you are not enrolled yet and would like to experience its benefits, go to **Settings** > **General** > **Advanced features** > **Microsoft Threat Experts** to apply. Once accepted, you will get the benefits of Targeted Attack Notifications, and start a  90-day trial of Experts on Demand. Contact your Microsoft representative to get a full Experts on Demand subscription. See [Configure Microsoft Threat Experts capabilities](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-atp/configure-microsoft-threat-experts#before-you-begin) for details.