To link the Intune Tenant with AM for Intune:
1. Navigate to Administration > Azure tenants in our management portal to add your or your customer's Azure for AM for Intune.
2. Click Link tenant.
3. Fill in the tenant name. If the tenant name is used in default format, it automatically adds the suffix onmicrosoft.com to it. The tenant name can be found at https://portal.azure.com/#blade/Microsoft_Intune_DeviceSettings/ExtensionLandingBlade/tenantStatus.
4. Click Link.