Update virtual-machine-scale-sets-perform-manual-upgrades.md

Author: mimckitt

articles/virtual-machine-scale-sets/virtual-machine-scale-sets-perform-manual-upgrades.md

@@ -20,7 +20,7 @@ If you have the upgrade policy set to manual, any changes made to the scale set
 
 ### [Portal](#tab/portal)
 
-Select the Virtual Machine Scale Set you want to perform instance upgrades on. In the menu under **Settings**, select **Instances** and select the instances you want to upgrade. Once selected, click the **Upgrade** option.
+Select the Virtual Machine Scale Set you want to perform instance upgrades on. In the menu under **Settings**, select **Instances** and select the instances you want to upgrade. Once selected, click the **Upgrade** option. If using Virtual Machine Scale Sets with Flexible Orchestration, manual upgrade support using the Portal is not yet supported. To perform manual upgrades, see the CLI, PowerShell and REST tabs. 
 
 :::image type="content" source="../virtual-machine-scale-sets/media/maxsurge/manual-upgrade-1.png" alt-text="Screenshot showing how to perform manual upgrades using the Azure portal.":::