Merge pull request #262548 from vhorne/fw-parallel-ip-groups

add install for parallel ip groups

Author: ttorble

articles/firewall/ip-groups.md

@@ -75,6 +75,28 @@ With this support, you can now:
 
      For example, if there is an error with one IP Group update out of 20 parallel updates, the other updates proceed, and the errored IP Group fails. In addition, if the IP Group update fails, and the firewall is still healthy, the firewall remains in a *Succeeded* state. To check if the IP Group update has failed or succeeded, you can view the status on the IP Group resource.
 
+To activate Parallel IP Group support, you can register the feature using either Azure PowerShell or the Azure portal.
+
+### Azure PowerShell
+
+Use the following Azure PowerShell commands:
+
+```azurepowershell
+Connect-AzAccount
+Select-AzSubscription -Subscription <subscription_id> or <subscription_name>
+Register-AzProviderFeature -FeatureName AzureFirewallParallelIPGroupUpdate -ProviderNamespace Microsoft.Network
+Register-AzResourceProvider -ProviderNamespace Microsoft.Network
+```
+It can take several minutes for this to take effect. Once the feature is completely registered, consider performing an update on Azure Firewall for the change to take effect immediately.
+
+### Azure portal
+
+1. Navigate to **Preview features** in the Azure portal.
+2. Search and register **AzureFirewallParallelIPGroupUpdate**.
+3. Ensure the feature is enabled.
+
+:::image type="content" source="media/ip-groups/preview-features-parallel.png" alt-text="Screenshot showing the parallel IP groups feature.":::
+
 ## Region availability
 
 IP Groups are available in all public cloud regions.