Add Modern Commerce Admin

Author: abhijeetsinha

articles/active-directory/users-groups-roles/directory-assign-admin-roles.md

@@ -303,6 +303,7 @@ Users in this role can monitor all notifications in the Message Center, includin
 Users in this role can monitor notifications and advisory health updates in [Office 365 Message center](https://support.office.com/article/Message-center-in-Office-365-38FB3333-BFCC-4340-A37B-DEDA509C2093) for their organization on configured services such as Exchange, Intune, and Microsoft Teams. Message Center Readers receive weekly email digests of posts, updates, and can share message center posts in Office 365. In Azure AD, users assigned to this role will only have read-only access on Azure AD services such as users and groups. This role has no access to view, create, or manage support tickets.
 
 ### [Modern Commerce Administrator](#modern-commerce-administrator-permissions)
+Do not use. This role is automatically assigned from Commerce, and is not intended or supported for any other use. See details below.
 
 The Modern Commerce Administrator role gives certain users permission to access Microsoft 365 admin center and see the left navigation entries for **Home**, **Billing**, and **Support**. The content available in these areas is controlled by [commerce-specific roles](https://docs.microsoft.com/azure/cost-management-billing/manage/understand-mca-roles) assigned to users to manage products that they bought for themselves or your organization. This might include tasks like paying bills, or for access to billing accounts and billing profiles.