Update grant-mssp-access.md

Author: denisebmsft

defender-endpoint/grant-mssp-access.md

@@ -27,6 +27,8 @@ ms.date: 12/18/2020
 
 > [!IMPORTANT]
 > Some information relates to prereleased product which may be substantially modified before it's commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
+>
+> Microsoft recommends that you use roles with the fewest permissions. This helps improve security for your organization. Global Administrator is a highly privileged role that should be limited to emergency scenarios when you can't use an existing role.
 
 To implement a multitenant delegated access solution, take the following steps: